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Strong Customer Authentication
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height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m5 4.586 4 4-4 4L6.414 14l5.414-5.414-5.414-5.414L5 4.586Z" fill="currentColor"></path></svg></button></div></div></div></div><div data-testid="left-layout" class="page-layout_page-layout__M2lNk page-layout_fixed-layout__hOmlH page-layout_left-layout__rxzHd"><button data-testid="left-nav-toggle" data-tracking-id="left-nav-toggle" aria-label="Toggle left navigation" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 left-nav_left-nav-toggle__M_yBT"><svg xmlns="http://www.w3.org/2000/svg" width="16" height="24" viewBox="0 0 16 12" fill="none"><path fill="#7B61FF" fill-rule="evenodd" d="M0.292893 5.29282L5.29289 0.292818L6.70711 1.70703L3.41421 4.99992L6.5 4.99992L11.5 4.99992L11.5 6.99992L6.5 6.99992L3.41421 6.99992L6.70711 10.2928L5.29289 11.707L0.292893 6.70703C-0.0976315 6.31651 -0.0976315 5.68334 0.292893 5.29282ZM16 -6.99382e-07L14 -6.11959e-07L14 12L16 12L16 -6.99382e-07Z" clip-rule="evenodd"></path></svg></button><div data-testid="left-nav" class="box_p-l-3x__N7Usx box_p-r-3x__0IVNa box_p-t-2x__M5RH8 box_p-b-2x__bSkd6 box_b-r-l-std__Q4dy4 left-nav_left-nav__tj2rk"><div class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_top-level__aAjx6"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Overview"}" href="/docs/payments-overview" class="text_base__bZ6a4 text_paragraph-30___agDz text_medium-30__U9kB2 left-nav-items_link__skoFI left-nav-items_top-level__zpAn3 focus-ring-styles_focus-ring__5P6v0">Overview</a></div><div aria-expanded="false" aria-controls=":R59l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_top-level__aAjx6"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Technical Scenarios"}" href="/docs/payments/scenarios" class="text_base__bZ6a4 text_paragraph-30___agDz text_medium-30__U9kB2 left-nav-items_link__skoFI left-nav-items_top-level__zpAn3 focus-ring-styles_focus-ring__5P6v0">Technical Scenarios</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":R59l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Build a Tip Report"}" href="/docs/payments/scenarios/tip-reporting" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Build a Tip Report</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Split an Online Payment"}" href="/docs/payments/scenarios/split-online-payment" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Split an Online Payment</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Build a Sales Report"}" href="/docs/payments/scenarios/simple-sales-report" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Build a Sales Report</a></div></div></div><div aria-expanded="false" aria-controls=":R79l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_top-level__aAjx6"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Payments"}" href="/docs/payments-refunds" class="text_base__bZ6a4 text_paragraph-30___agDz text_medium-30__U9kB2 left-nav-items_link__skoFI left-nav-items_top-level__zpAn3 focus-ring-styles_focus-ring__5P6v0">Payments</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":R79l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div aria-expanded="false" aria-controls=":Rq79l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Take Payments"}" href="/docs/payments-api/take-payments" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Take Payments</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":Rq79l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div aria-expanded="false" aria-controls=":R1kq79l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Card Payments"}" href="/docs/payments-api/take-payments/card-payments" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Card Payments</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":R1kq79l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Delayed Capture"}" href="/docs/payments-api/take-payments/card-payments/delayed-capture" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Delayed Capture</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Partial Payments"}" href="/docs/payments-api/take-payments/card-payments/partial-payments-with-gift-cards" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Partial Payments</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Statement Descriptions"}" href="/docs/payments-api/take-payments/card-payments/statement-descriptions" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Statement Descriptions</a></div></div></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"ACH Bank Transfer Payment"}" href="/docs/payments-api/take-payments/ach-payments" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>ACH Bank Transfer Payment</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Afterpay and Clearpay Payments"}" href="/docs/payments-api/take-payments/afterpay-payments" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Afterpay and Clearpay Payments</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Cash App Payments"}" href="/docs/payments-api/take-payments/cash-app-payments" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Cash App Payments</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Cash Payments"}" href="/docs/payments-api/take-payments/cash-payments" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Cash Payments</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"External Payments"}" href="/docs/payments-api/take-payments/external-payments" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>External Payments</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"House Accounts"}" href="/docs/payments-api/take-payments/house-accounts" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>House Accounts</a></div></div></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Collect Application Fees"}" href="/docs/payments-api/take-payments-and-collect-fees" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Collect Application Fees</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Update Payment and Tip Amounts"}" href="/docs/payments-api/update-payments" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Update Payment and Tip Amounts</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Retrieve Payments"}" href="/docs/payments-api/retrieve-payments" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Retrieve Payments</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Troubleshoot"}" href="/docs/payments-api/error-codes" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Troubleshoot</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Webhooks"}" href="/docs/payments-api/webhooks" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Webhooks</a></div></div></div><div aria-expanded="false" aria-controls=":R99l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_top-level__aAjx6"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Refunds"}" href="/docs/refunds-api/overview" class="text_base__bZ6a4 text_paragraph-30___agDz text_medium-30__U9kB2 left-nav-items_link__skoFI left-nav-items_top-level__zpAn3 focus-ring-styles_focus-ring__5P6v0">Refunds</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":R99l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Refund Payments"}" href="/docs/payments-api/refund-payments" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Refund Payments</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Refund a Payment with an App Fee"}" href="/docs/payments-api/collect-fees/payment-with-app-fee-refund" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Refund a Payment with an App Fee</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Retrieve Refunds"}" href="/docs/refunds-api/retrieve-refunds" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Retrieve Refunds</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Process an Unlinked Refund"}" href="/docs/refunds-api/unlinked-refunds" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Process an Unlinked Refund</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Webhooks"}" href="/docs/refunds-api/webhooks" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Webhooks</a></div></div></div><div aria-expanded="false" aria-controls=":Rb9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_top-level__aAjx6"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Disputes"}" href="/docs/disputes-api/overview" class="text_base__bZ6a4 text_paragraph-30___agDz text_medium-30__U9kB2 left-nav-items_link__skoFI left-nav-items_top-level__zpAn3 focus-ring-styles_focus-ring__5P6v0">Disputes</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":Rb9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Process Disputes"}" href="/docs/disputes-api/process-disputes" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Process Disputes</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Test in the Sandbox"}" href="/docs/disputes-api/sandbox-testing" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Test in the Sandbox</a></div></div></div><div data-testid="left-nav-divider" class="box_m-l-075x__tnNb9 box_m-r-075x__gXUwj left-nav-items_divider__up2uZ"></div><div aria-expanded="false" aria-controls=":Rf9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_top-level__aAjx6"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Take Payments on Hardware"}" href="/docs/in-person-payment-options" class="text_base__bZ6a4 text_paragraph-30___agDz text_medium-30__U9kB2 left-nav-items_link__skoFI left-nav-items_top-level__zpAn3 focus-ring-styles_focus-ring__5P6v0">Take Payments on Hardware</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":Rf9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div aria-expanded="false" aria-controls=":Rqf9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Terminal API"}" href="/docs/terminal-api/overview" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Terminal API</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":Rqf9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Quickstart"}" href="/docs/terminal-api/quickstart" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Quickstart</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Take Payments"}" href="/docs/terminal-api/square-terminal-payments" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Take Payments</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"POS App Pairing with Square Terminal"}" href="/docs/terminal-api/pos-integration" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>POS App Pairing with Square Terminal</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Dismiss Terminal Checkouts and Refunds"}" href="/docs/terminal-api/dismiss-checkouts-and-refunds" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Dismiss Terminal Checkouts and Refunds</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Monitor Square Terminals"}" href="/docs/terminal-api/terminal-device-monitoring" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Monitor Square Terminals</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Manage Terminal Actions"}" href="/docs/terminal-api/advanced-features" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Manage Terminal Actions</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Save Card on File"}" href="/docs/terminal-api/advanced-features/save-card-on-file" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Save Card on File</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Check Device Information"}" href="/docs/terminal-api/advanced-features/check-device-information" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Check Device Information</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Print or Issue Receipts"}" href="/docs/terminal-api/advanced-features/issue-receipts" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Print or Issue Receipts</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Customize the Idle Screen"}" href="/docs/terminal-api/advanced-features/customize-idle-screen" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Customize the Idle Screen</a></div><div aria-expanded="false" aria-controls=":Rbkqf9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Custom Screen Workflows"}" href="/docs/terminal-api/advanced-features/custom-workflows" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Custom Screen Workflows</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":Rbkqf9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Confirmation Screen"}" href="/docs/terminal-api/advanced-features/custom-workflows/confirmation" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Confirmation Screen</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Signature Capture Screen"}" href="/docs/terminal-api/advanced-features/custom-workflows/signature" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Signature Capture Screen</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Data Collection Screen"}" href="/docs/terminal-api/advanced-features/custom-workflows/data-collection" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Data Collection Screen</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Menu Selection List Screen"}" href="/docs/terminal-api/advanced-features/custom-workflows/menu-select" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Menu Selection List Screen</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"QR Code Screen"}" href="/docs/terminal-api/advanced-features/custom-workflows/qr-code-display" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>QR Code Screen</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Link and Dismiss Actions"}" href="/docs/terminal-api/advanced-features/custom-workflows/link-and-dismiss-actions" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Link and Dismiss Actions</a></div></div></div><div aria-expanded="false" aria-controls=":Rckqf9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"International Payment Methods"}" href="/docs/terminal-api/international-payment-methods" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>International Payment Methods</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":Rckqf9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Refund Interac Payments"}" href="/docs/terminal-api/square-terminal-refunds" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Refund Interac Payments</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Take E-Money Payments"}" href="/docs/terminal-api/e-money-payments" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Take E-Money Payments</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Take PayPay QR Code Payments"}" href="/docs/terminal-api/international-payment-methods/paypay-qr-code-payments" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Take PayPay QR Code Payments</a></div></div></div></div></div><div aria-expanded="false" aria-controls=":R1af9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Mobile Payments SDK"}" href="/docs/mobile-payments-sdk" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Mobile Payments SDK</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":R1af9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div aria-expanded="false" aria-controls=":R1laf9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Build on Android"}" href="/docs/mobile-payments-sdk/android" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Build on Android</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":R1laf9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Authorize the Mobile Payments SDK"}" href="/docs/mobile-payments-sdk/android/configure-authorize" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Authorize the Mobile Payments SDK</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Pair and Manage Card Readers"}" href="/docs/mobile-payments-sdk/android/pair-manage-readers" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Pair and Manage Card Readers</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Take a Payment"}" href="/docs/mobile-payments-sdk/android/take-payments" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Take a Payment</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Offline Payments"}" href="/docs/mobile-payments-sdk/android/offline-payments" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Offline Payments</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Handling Errors"}" href="/docs/mobile-payments-sdk/android/handling-errors" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Handling Errors</a></div></div></div><div aria-expanded="false" aria-controls=":R2laf9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Build on iOS"}" href="/docs/mobile-payments-sdk/ios" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Build on iOS</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":R2laf9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Authorize the Mobile Payments SDK"}" href="/docs/mobile-payments-sdk/ios/configure-authorize" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Authorize the Mobile Payments SDK</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Pair and Manage Card Readers"}" href="/docs/mobile-payments-sdk/ios/pair-manage-readers" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Pair and Manage Card Readers</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Take a Payment"}" href="/docs/mobile-payments-sdk/ios/take-payments" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Take a Payment</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Offline Payments"}" href="/docs/mobile-payments-sdk/ios/offline-payments" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Offline Payments</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Configure for Square Stand"}" href="/docs/mobile-payments-sdk/ios/square-stand" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Configure for Square Stand</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Handling Errors"}" href="/docs/mobile-payments-sdk/ios/handling-errors" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Handling Errors</a></div></div></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Migrate from Reader SDK"}" href="/docs/mobile-payments-sdk/migrate" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Migrate from Reader SDK</a></div></div></div><div aria-expanded="false" aria-controls=":R1qf9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Reader SDK"}" href="/docs/reader-sdk/what-it-does" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Reader SDK</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":R1qf9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div aria-expanded="false" aria-controls=":R1lqf9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Quickstart"}" href="/docs/reader-sdk/quick-start/start" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Quickstart</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":R1lqf9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Get Credentials"}" href="/docs/reader-sdk/quick-start/step-1" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Get Credentials</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Configure the Sample Application"}" href="/docs/reader-sdk/quick-start/step-2" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Configure the Sample Application</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Take a Cash Payment"}" href="/docs/reader-sdk/quick-start/step-3" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Take a Cash Payment</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Customize the Checkout Amount"}" href="/docs/reader-sdk/quick-start/step-4" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Customize the Checkout Amount</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Take a Credit Card Payment"}" href="/docs/reader-sdk/quick-start/step-5" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Take a Credit Card Payment</a></div></div></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"How It Works"}" href="/docs/reader-sdk/how-it-works" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>How It Works</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Build on Android"}" href="/docs/reader-sdk/build-on-android" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Build on Android</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Build on iOS"}" href="/docs/reader-sdk/build-on-ios" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Build on iOS</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Connect a Contactless Reader"}" href="/docs/reader-sdk/cookbook/contactless-reader" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Connect a Contactless Reader</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Charge a Card on File"}" href="/docs/reader-sdk/cookbook/charge-cards-on-file" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Charge a Card on File</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Save a Card on File"}" href="/docs/reader-sdk/cookbook/save-cards-on-file" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Save a Card on File</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Configure on iOS for Square Stand"}" href="/docs/reader-sdk/cookbook/square-stand" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Configure on iOS for Square Stand</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Deauthorize Reader SDK"}" href="/docs/reader-sdk/cookbook/deauthorize-reader-sdk" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Deauthorize Reader SDK</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Capture a Transaction"}" href="/docs/reader-sdk/cookbook/capture-a-transaction" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Capture a Transaction</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Delay the Capture of Payments"}" href="/docs/reader-sdk/cookbook/delay-capture-of-payment" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Delay the Capture of Payments</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Configure APK Splits"}" href="/docs/reader-sdk/cookbook/configure-apk-splits" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Configure APK Splits</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Update to New Reader SDK Version"}" href="/docs/reader-sdk/upgrade-reader-sdk" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Update to New Reader SDK Version</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Flutter Plugin"}" href="/docs/reader-sdk/flutter" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Flutter Plugin</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"React Native Plugin"}" href="/docs/reader-sdk/react-native" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>React Native Plugin</a></div></div></div><div aria-expanded="false" aria-controls=":R2af9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Point of Sale API"}" href="/docs/pos-api/what-it-does" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Point of Sale API</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":R2af9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"How It Works"}" href="/docs/pos-api/how-it-works" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>How It Works</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Build on Android"}" href="/docs/pos-api/build-on-android" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Build on Android</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Build on iOS"}" href="/docs/pos-api/build-on-ios" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Build on iOS</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Build on Mobile Web"}" href="/docs/pos-api/build-mobile-web" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Build on Mobile Web</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Find Your Android Fingerprint"}" href="/docs/pos-api/cookbook/find-your-android-fingerprint" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Find Your Android Fingerprint</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Use the API in Offline Mode"}" href="/docs/pos-api/cookbook/offline-mode" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Use the API in Offline Mode</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Add an Alert Dialog Helper Class"}" href="/docs/pos-api/cookbook/alert-dialog-helper" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Add an Alert Dialog Helper Class</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Accept E-Money Payments"}" href="/docs/pos-api/cookbook/electronic-payments" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Accept E-Money Payments</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Accept PayPay Payments"}" href="/docs/pos-api/qr-code-payments-paypay" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Accept PayPay Payments</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Mobile Web Technical Reference"}" href="/docs/pos-api/web-technical-reference" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Mobile Web Technical Reference</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Payments API Integration"}" href="/docs/pos-api/payments-integration" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Payments API Integration</a></div></div></div></div></div><div aria-expanded="true" aria-controls=":Rh9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_top-level__aAjx6"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Take Payments Online"}" href="/docs/online-payment-options" class="text_base__bZ6a4 text_paragraph-30___agDz text_medium-30__U9kB2 left-nav-items_link__skoFI left-nav-items_top-level__zpAn3 focus-ring-styles_focus-ring__5P6v0">Take Payments Online</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd recursive-nav-item_expanded__VQNoM"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":Rh9l6:" role="region" class="recursive-nav-item_items-container__BBrAQ recursive-nav-item_expanded__VQNoM"><div class="recursive-nav-item_content__WNo9i"><div aria-expanded="false" aria-controls=":Rqh9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Web Payments SDK"}" href="/docs/web-payments/overview" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Web Payments SDK</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":Rqh9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div aria-expanded="false" aria-controls=":R1kqh9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Quickstart"}" href="/docs/web-payments/quickstart" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Quickstart</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":R1kqh9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Clone the Quickstart Project Template"}" href="/docs/web-payments/quickstart/clone-quickstart-project" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Clone the Quickstart Project Template</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Add the SDK to the Web Client"}" href="/docs/web-payments/quickstart/add-sdk-to-web-client" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Add the SDK to the Web Client</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Verify the Payment"}" href="/docs/web-payments/quickstart/verify-the-payment" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Verify the Payment</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Add Strong Customer Authentication"}" href="/docs/web-payments/quickstart/add-sca" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Add Strong Customer Authentication</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Deploy the Application"}" href="/docs/web-payments/quickstart/deploy-app" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Deploy the Application</a></div></div></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Take a Card Payment"}" href="/docs/web-payments/take-card-payment" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Take a Card Payment</a></div><div aria-expanded="false" aria-controls=":R3kqh9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Integrate Digital Wallets"}" href="/docs/web-payments/digital-wallets" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Integrate Digital Wallets</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":R3kqh9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Apple Pay"}" href="/docs/web-payments/apple-pay" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Apple Pay</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Google Pay"}" href="/docs/web-payments/google-pay" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Google Pay</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Digital Wallet Payment Requests"}" href="/docs/web-payments/payment-requests" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Digital Wallet Payment Requests</a></div></div></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"ACH Bank Transfer"}" href="/docs/web-payments/add-ach" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>ACH Bank Transfer</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Afterpay"}" href="/docs/web-payments/add-afterpay" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Afterpay</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Cash App Pay"}" href="/docs/web-payments/add-cash-app-pay" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Cash App Pay</a></div><div aria-expanded="false" aria-controls=":R7kqh9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Square Gift Card Payments"}" href="/docs/web-payments/gift-cards-intro" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Square Gift Card Payments</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":R7kqh9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Take a Gift Card Payment"}" href="/docs/web-payments/gift-card" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Take a Gift Card Payment</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Take Partial Payments"}" href="/docs/web-payments/gift-card-walkthrough" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Take Partial Payments</a></div></div></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Customize the Card Entry Form"}" href="/docs/web-payments/customize-styles" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Customize the Card Entry Form</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Add SCA to a Card Payment"}" href="/docs/web-payments/sca" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Add SCA to a Card Payment</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Store Card on File with SCA"}" href="/docs/web-payments/sca-add-card" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Store Card on File with SCA</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Charge Card on File with SCA"}" href="/docs/web-payments/sca-charge-card-on-file" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Charge Card on File with SCA</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Charge and Store Card on File with SCA"}" href="/docs/web-payments/sca-charge-and-store-card-on-file" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Charge and Store Card on File with SCA</a></div></div></div><div aria-expanded="true" aria-controls=":R1ah9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"In-App Payments SDK"}" href="/docs/in-app-payments-sdk/what-it-does" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">In-App Payments SDK</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd recursive-nav-item_expanded__VQNoM"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":R1ah9l6:" role="region" class="recursive-nav-item_items-container__BBrAQ recursive-nav-item_expanded__VQNoM"><div class="recursive-nav-item_content__WNo9i"><div aria-expanded="false" aria-controls=":R1lah9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Quickstart"}" href="/docs/in-app-payments-sdk/quick-start" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Quickstart</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":R1lah9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Set up the Client"}" href="/docs/in-app-payments-sdk/quick-start/generate-token" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Set up the Client</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Deploy the Server"}" href="/docs/in-app-payments-sdk/quick-start/deploy-server-backend" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Deploy the Server</a></div></div></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Install the SDK"}" href="/docs/in-app-payments-sdk/installation" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Install the SDK</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Build on Android"}" href="/docs/in-app-payments-sdk/build-on-android" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Build on Android</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Build on iOS"}" href="/docs/in-app-payments-sdk/build-on-ios" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Build on iOS</a></div><div aria-expanded="false" aria-controls=":R5lah9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Integrate Digital Wallets"}" href="/docs/in-app-payments-sdk/add-digital-wallets" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Integrate Digital Wallets</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":R5lah9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Google Pay"}" href="/docs/in-app-payments-sdk/add-digital-wallets/google-pay" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Google Pay</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Apple Pay"}" href="/docs/in-app-payments-sdk/add-digital-wallets/apple-pay" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Apple Pay</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Enable SRC for Android"}" href="/docs/in-app-payments-sdk/add-digital-wallets/src/android" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Enable SRC for Android</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Enable SRC for iOS"}" href="/docs/in-app-payments-sdk/add-digital-wallets/src/ios" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Enable SRC for iOS</a></div></div></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Localize an Application "}" href="/docs/in-app-payments/localize-ios" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Localize an Application </a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Gift Card Payments"}" href="/docs/in-app-payments-sdk/cookbook/giftcards" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Gift Card Payments</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Flutter Plugin"}" href="/docs/in-app-payments-sdk/flutter" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Flutter Plugin</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"React Native Plugin"}" href="/docs/in-app-payments-sdk/react-native" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>React Native Plugin</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Customize the Payment Entry Form"}" href="/docs/in-app-payments-sdk/cookbook/customize-payment-form" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Customize the Payment Entry Form</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Connect to a Backend Service"}" href="/docs/in-app-payments-sdk/cookbook/connect-to-a-backend-service" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Connect to a Backend Service</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Remove the Postal Code Requirement"}" href="/docs/in-app-payments-sdk/cookbook/disable-postal-code" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Remove the Postal Code Requirement</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Troubleshoot"}" href="/docs/in-app-payments-sdk/troubleshooting" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Troubleshoot</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"How It Works"}" href="/docs/in-app-payments-sdk/how-it-works" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>How It Works</a></div><div aria-expanded="true" aria-controls=":Rflah9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Strong Customer Authentication"}" id="left-nav-active-item" href="/docs/sca-overview-iap" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_active__X6xck left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Strong Customer Authentication</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd recursive-nav-item_expanded__VQNoM"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":Rflah9l6:" role="region" class="recursive-nav-item_items-container__BBrAQ recursive-nav-item_expanded__VQNoM"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Verify a Buyer"}" href="/docs/in-app-payments-sdk/verify-buyer" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span><span class="left-nav-items_depth-space__b597h"></span>Verify a Buyer</a></div></div></div></div></div><div aria-expanded="false" aria-controls=":R1qh9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Checkout API"}" href="/docs/checkout-api" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Checkout API</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":R1qh9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Quick Pay Checkout"}" href="/docs/checkout-api/quick-pay-checkout" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Quick Pay Checkout</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Square Order Checkout"}" href="/docs/checkout-api/square-order-checkout" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Square Order Checkout</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Subscription Plan Checkout"}" href="/docs/checkout-api/subscription-plan-checkout" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Subscription Plan Checkout</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Checkout Settings"}" href="/docs/checkout-api/checkout-settings" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Checkout Settings</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Checkout Configurations"}" href="/docs/checkout-api/optional-checkout-configurations" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Checkout Configurations</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Manage Checkout"}" href="/docs/checkout-api/manage-checkout" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Manage Checkout</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Guidelines and Limitations"}" href="/docs/checkout-api/guidelines-and-limitations" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Guidelines and Limitations</a></div></div></div><div aria-expanded="false" aria-controls=":R2ah9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Subscriptions API"}" href="/docs/subscriptions/overview" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Subscriptions API</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":R2ah9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Subscription Plans and Variations"}" href="/docs/subscriptions-api/plans-and-variations" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Subscription Plans and Variations</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Manage Subscriptions"}" href="/docs/subscriptions-api/manage-subscriptions" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Manage Subscriptions</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Subscription Actions and Events"}" href="/docs/subscriptions-api/actions-events" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Subscription Actions and Events</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Pause, Resume, or Cancel Subscriptions"}" href="/docs/subscriptions-api/pause-resume-cancel-subscriptions" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Pause, Resume, or Cancel Subscriptions</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Subscription Billing and Invoices"}" href="/docs/subscriptions-api/subscription-billing" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Subscription Billing and Invoices</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Swap Subscription Plan Variations"}" href="/docs/subscriptions-api/swap-plan-variations" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Swap Subscription Plan Variations</a></div></div></div><div aria-expanded="false" aria-controls=":R2qh9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_inner-sub-cat__ngiQT"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Invoices API"}" href="/docs/invoices-api/overview" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Invoices API</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":R2qh9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Create and Publish Invoices"}" href="/docs/invoices-api/create-publish-invoices" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Create and Publish Invoices</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Retrieve, List, or Search Invoices"}" href="/docs/invoices-api/retrieve-list-search-invoices" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Retrieve, List, or Search Invoices</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Create or Delete Invoice Attachments"}" href="/docs/invoices-api/attachments" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Create or Delete Invoice Attachments</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Update Invoices"}" href="/docs/invoices-api/update-invoices" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Update Invoices</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Cancel or Delete Invoices"}" href="/docs/invoices-api/cancel-delete-invoices" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Cancel or Delete Invoices</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Pay or Refund Invoices"}" href="/docs/invoices-api/pay-refund-invoices" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Pay or Refund Invoices</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Walkthrough: Create and Publish Invoices"}" href="/docs/invoices-api/walkthrough" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0"><span class="left-nav-items_depth-space__b597h"></span>Walkthrough: Create and Publish Invoices</a></div></div></div></div></div><div data-testid="left-nav-divider" class="box_m-l-075x__tnNb9 box_m-r-075x__gXUwj left-nav-items_divider__up2uZ"></div><div aria-expanded="false" aria-controls=":Rl9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_top-level__aAjx6"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Cards"}" href="/docs/cards-api/overview" class="text_base__bZ6a4 text_paragraph-30___agDz text_medium-30__U9kB2 left-nav-items_link__skoFI left-nav-items_top-level__zpAn3 focus-ring-styles_focus-ring__5P6v0">Cards</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":Rl9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Manage Cards"}" href="/docs/cards-api/manage-cards" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Manage Cards</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Create a Card on File from Payment ID"}" href="/docs/cards-api/walkthrough/card-from-payment-id" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Create a Card on File from Payment ID</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Create a Card on File and Make a Payment"}" href="/docs/cards-api/walkthrough-seller-card" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Create a Card on File and Make a Payment</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Create a Shared Card on File and Make a Payment"}" href="/docs/cards-api/walkthrough-shared-card" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Create a Shared Card on File and Make a Payment</a></div></div></div><div aria-expanded="false" aria-controls=":Rn9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_top-level__aAjx6"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Payouts"}" href="/docs/payouts-api/overview" class="text_base__bZ6a4 text_paragraph-30___agDz text_medium-30__U9kB2 left-nav-items_link__skoFI left-nav-items_top-level__zpAn3 focus-ring-styles_focus-ring__5P6v0">Payouts</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 4-4L13.414 6 8 11.414 2.586 6 4 4.586Z" fill="#7B61FF"></path></svg></button></div><div id=":Rn9l6:" inert="true" role="region" class="recursive-nav-item_items-container__BBrAQ"><div class="recursive-nav-item_content__WNo9i"><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"List Payouts"}" href="/docs/payouts-api/list-payouts" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">List Payouts</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Get Payout"}" href="/docs/payouts-api/get-payout" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Get Payout</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"List Payout Entries"}" href="/docs/payouts-api/list-payout-entries" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">List Payout Entries</a></div></div></div><div class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_top-level__aAjx6"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Bank Accounts"}" href="/docs/bank-accounts-api" class="text_base__bZ6a4 text_paragraph-30___agDz text_medium-30__U9kB2 left-nav-items_link__skoFI left-nav-items_top-level__zpAn3 focus-ring-styles_focus-ring__5P6v0">Bank Accounts</a></div><div aria-expanded="false" aria-controls=":Rr9l6:" class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_top-level__aAjx6"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Mobile Authorization"}" href="/docs/mobile-authz/what-it-does" class="text_base__bZ6a4 text_paragraph-30___agDz text_medium-30__U9kB2 left-nav-items_link__skoFI left-nav-items_top-level__zpAn3 focus-ring-styles_focus-ring__5P6v0">Mobile Authorization</a><button data-testid="expand-nav-items" data-tracking-id="expand-nav-items" aria-label="Expand navigation items" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 recursive-nav-item_expand-button__OaGCd"><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="m4 4.586 4 4 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Authorization</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Get Authorization Code on Command Line"}" href="/docs/mobile-authz/cookbook/mobile-code-with-curl" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy left-nav-items_link__skoFI left-nav-items_sub-level__bbmd6 focus-ring-styles_focus-ring__5P6v0">Get Authorization Code on Command Line</a></div></div></div><div data-testid="left-nav-divider" class="box_m-l-075x__tnNb9 box_m-r-075x__gXUwj left-nav-items_divider__up2uZ"></div><div class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_top-level__aAjx6"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Payment Methods by Country"}" href="/docs/payment-card-support-by-country" class="text_base__bZ6a4 text_paragraph-30___agDz text_medium-30__U9kB2 left-nav-items_link__skoFI left-nav-items_top-level__zpAn3 focus-ring-styles_focus-ring__5P6v0">Payment Methods by Country</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_top-level__aAjx6"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Payments Pricing"}" href="/docs/payments-pricing" class="text_base__bZ6a4 text_paragraph-30___agDz text_medium-30__U9kB2 left-nav-items_link__skoFI left-nav-items_top-level__zpAn3 focus-ring-styles_focus-ring__5P6v0">Payments Pricing</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_top-level__aAjx6"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Strong Customer Authentication"}" href="/docs/sca-overview" class="text_base__bZ6a4 text_paragraph-30___agDz text_medium-30__U9kB2 left-nav-items_link__skoFI left-nav-items_top-level__zpAn3 focus-ring-styles_focus-ring__5P6v0">Strong Customer Authentication</a></div><div class="recursive-nav-item_nav-item-wrap__7yT4s recursive-nav-item_top-level__aAjx6"><a data-tracking-id="left-nav-link" data-tracking-extra="{"title":"Payment Minimums"}" href="/docs/payment-minimums" class="text_base__bZ6a4 text_paragraph-30___agDz text_medium-30__U9kB2 left-nav-items_link__skoFI left-nav-items_top-level__zpAn3 focus-ring-styles_focus-ring__5P6v0">Payment Minimums</a></div></div></div><div class="grid_dex-grid-container__ZLJnB grid_dex-docs-app-grid-container__k80cL page-layout_page-layout__M2lNk page-layout_static-layout__CfHWZ"><div class="grid-item_grid-item-small__Xb5VI page-layout_left-nav__gfhJ2"></div><div class="box_m-t-6x__LvLNv box_m-b-6x__RhdjX page-layout_page-main__W1JTS grid-item_grid-item-medium__GhKvB"><div data-testid="docs-content-layout" class="grid_dex-grid-container__ZLJnB grid_dex-docs-content-grid-container__diyxN"><div class="page-layout_content-main-grid-item__VRqbw page-layout_grid-item-column-autosizing__PtGh2 grid-item_grid-item-medium__GhKvB page-layout_limit-width__VDAgU"><div data-testid="doc-page-heading-breadcrumbs" class="box_m-b-05x__rKeET doc-breadcrumb_container__l80u_"><a aria-label="Documentation homepage" href="/docs" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 doc-breadcrumb_breadcrumb__xyMjK focus-ring-styles_focus-ring__5P6v0"><svg width="10" height="20" viewBox="0 0 10 22" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M.5 16a.5.5 0 0 1-.5-.5V9.02a1 1 0 0 1 .427-.819l4-2.8a1 1 0 0 1 1.146 0l4 2.8a1 1 0 0 1 .427.82V15.5a.5.5 0 0 1-.5.5H6v-4H4v4H.5Z" fill="#000" fill-opacity="0.55"></path></svg></a><p class="box_m-l-05x__zb9MT box_m-r-05x__m9ODf text_base__bZ6a4 text_paragraph-10__9t3Cn text_color-30__dpPZ4">/</p><a href="/docs/payments-overview" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 doc-breadcrumb_breadcrumb__xyMjK focus-ring-styles_focus-ring__5P6v0">Payments</a><p class="box_m-l-05x__zb9MT box_m-r-05x__m9ODf text_base__bZ6a4 text_paragraph-10__9t3Cn text_color-30__dpPZ4">/</p><a href="/docs/online-payment-options" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 doc-breadcrumb_breadcrumb__xyMjK focus-ring-styles_focus-ring__5P6v0">Take Payments Online</a><p class="box_m-l-05x__zb9MT box_m-r-05x__m9ODf text_base__bZ6a4 text_paragraph-10__9t3Cn text_color-30__dpPZ4">/</p><a href="/docs/in-app-payments-sdk/what-it-does" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 doc-breadcrumb_breadcrumb__xyMjK focus-ring-styles_focus-ring__5P6v0">In-App Payments SDK</a></div><h1 data-testid="doc-page-heading" class="box_m-b-3x__A9ryy heading_base__MS64u heading_display-10__HZsS7 content_heading__9PVgB">Strong Customer Authentication</h1><div><div><article data-testid="markdown-doc" class="text_base__bZ6a4 text_paragraph-30___agDz nodes_article__2nMA2"><p><strong>Applies to:</strong> <span slot="trigger"><a data-tracking-id="markdown-link" href="https://developer.squareup.com/docs/api/in-app-payment/android" class="nodes_markdown-link__1J6_a">In-App Payments SDK - Android</a></span> | <span slot="trigger"><a data-tracking-id="markdown-link" href="https://developer.squareup.com/docs/api/in-app-payment/ios" class="nodes_markdown-link__1J6_a">In-App Payments SDK - iOS</a></span> | <span slot="trigger"><a data-tracking-id="markdown-link" href="/docs/web-payments/overview" class="nodes_markdown-link__1J6_a">Web Payments SDK</a></span> | <span slot="trigger"><a data-tracking-id="markdown-link" href="/docs/payments-refunds" class="nodes_markdown-link__1J6_a">Payments API</a></span> | <span slot="trigger"><a data-tracking-id="markdown-link" href="/docs/customers-api/what-it-does" class="nodes_markdown-link__1J6_a">Customers API</a></span></p><p><span class="box_m-t-1x__GR9iT text_base__bZ6a4 text_paragraph-30___agDz markdown-subheading_subheading__g4TR2">Learn how to use Strong Customer Authentication to verify buyers for online and in-app payments.</span><p></p><span class="box_m-t-1x__GR9iT text_base__bZ6a4 text_paragraph-30___agDz 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class="text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 sidebar-link_sidebar-link__hvuMG sidebar-link_sidebar-container__NFtV_">Liability shift</a></div><div class="box_m-b-1x__b2HHn"><a data-tracking-id="sidebar-link-clicked" href="/docs/sca-overview-iap#do-i-need-to-support-sca" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 sidebar-link_sidebar-link__hvuMG sidebar-link_sidebar-container__NFtV_">Do I need to support SCA?</a></div><div class="box_m-b-1x__b2HHn"><a data-tracking-id="sidebar-link-clicked" href="/docs/sca-overview-iap#how-is-square-helping-me-prepare-for-sca" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 sidebar-link_sidebar-link__hvuMG sidebar-link_sidebar-container__NFtV_">How is Square helping me prepare for SCA?</a></div><div class="box_m-b-1x__b2HHn"><a data-tracking-id="sidebar-link-clicked" href="/docs/sca-overview-iap#sca-in-non-mandated-markets" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 sidebar-link_sidebar-link__hvuMG sidebar-link_sidebar-container__NFtV_">SCA in non-mandated markets</a></div><div class="box_m-b-1x__b2HHn"><a data-tracking-id="sidebar-link-clicked" href="/docs/sca-overview-iap#buyer-verification-and-other-authentication-mechanisms" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 sidebar-link_sidebar-link__hvuMG sidebar-link_sidebar-container__NFtV_">Buyer verification and other authentication mechanisms</a></div><div class="box_m-b-1x__b2HHn"><a data-tracking-id="sidebar-link-clicked" href="/docs/sca-overview-iap#how-it-works" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 sidebar-link_sidebar-link__hvuMG sidebar-link_sidebar-container__NFtV_">How it works</a></div><div><a data-tracking-id="sidebar-link-clicked" href="/docs/sca-overview-iap#next-steps" class="text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 sidebar-link_sidebar-link__hvuMG sidebar-link_sidebar-container__NFtV_">Next steps</a></div></div></div></div><div data-markdown-heading="2" class="box_m-t-5x__L06CC box_m-b-2x__nVJGZ"><a href="#overview" id="overview" aria-label="anchor link for overview" class="anchored-heading_anchor__JhuiX"></a><div class="anchored-heading_heading__2wlPu"><div class="anchored-heading_container__rfGXv"><market-tooltip popover-placement="top-start"><a data-tracking-id="heading-anchor" role="link" tabindex="0" slot="trigger" aria-label="click to copy link for overview" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 anchored-heading_trigger__XOE12 anchored-heading_button__TMpy8"><svg width="16" height="16" viewBox="0 0 16 16" class="anchored-heading_icon__4HlYl"><path d="M10.432 1.032c-.641.093-.887.239-1.099.649-.056.109-.07.184-.071.391-.001.229.009.276.097.455a.921.921 0 0 0 .486.471c.198.092.446.102.849.035.807-.133 1.657.312 2.034 1.065.161.321.212.538.212.9 0 .361-.05.573-.216.916-.122.254-.131.262-1.778 1.91C9.299 9.471 9.29 9.48 9.036 9.602c-.375.182-.572.223-.988.207-.538-.021-.887-.163-1.303-.533-.259-.23-.453-.312-.741-.313a.971.971 0 0 0-.681.263c-.2.18-.29.382-.304.684-.017.354.065.54.365.829.502.484 1.096.81 1.797.986.424.107 1.137.133 1.589.059.366-.06.832-.209 1.141-.364.549-.276.665-.378 2.46-2.172 1.462-1.462 1.725-1.738 1.886-1.982.483-.732.692-1.417.692-2.269 0-1.11-.398-2.063-1.189-2.844a3.97 3.97 0 0 0-2.019-1.074 4.553 4.553 0 0 0-1.309-.047M6.93 3.694a4.276 4.276 0 0 0-1.955.778c-.103.074-.931.877-1.839 1.786C1.352 8.041 1.242 8.167.959 8.75c-.171.354-.25.583-.336.974-.083.379-.088 1.156-.011 1.518.34 1.59 1.458 2.767 2.996 3.155.256.065.401.081.835.093 1.025.028 1.494-.153 1.731-.666a.786.786 0 0 0 .082-.411.753.753 0 0 0-.098-.426 1.004 1.004 0 0 0-.482-.476c-.157-.077-.462-.089-.897-.036-.628.078-1.179-.115-1.645-.575a1.563 1.563 0 0 1-.354-.495c-.3-.608-.3-1.185-.001-1.799l.14-.285 1.64-1.639c1.567-1.566 1.65-1.644 1.88-1.761.34-.173.568-.228.946-.228.525 0 .954.164 1.36.522.293.257.404.307.714.323.234.012.277.005.442-.069.226-.101.452-.331.533-.54.084-.22.078-.58-.014-.787-.128-.287-.727-.792-1.249-1.053-.64-.319-1.553-.48-2.241-.395" fill-rule="evenodd"></path></svg></a><span slot="content">Link to section</span></market-tooltip></div><h2 class="heading_base__MS64u heading_heading-30__MH4YZ">Overview</h2></div></div><p>Use Strong Customer Authentication (SCA) with the Web Payment SDK and In-App Payments SDK to verify the buyer and reduce the chance of fraudulent transactions. SCA uses the <span slot="trigger"><a data-tracking-id="markdown-link" href="https://www.emvco.com/emv-technologies/3d-secure" class="nodes_markdown-link__1J6_a">3D Secure (3DS)</a></span> protocol and in the <span slot="trigger"><a data-tracking-id="markdown-link" href="https://www.gov.uk/eu-eea" class="nodes_markdown-link__1J6_a">European Economic Area (EEA)</a></span>.</p><div data-testid="aside" data-test-type="info" class="box_m-t-4x__FOwYa box_m-b-4x__jr_IJ box_p-l-2x__0A2_9 box_p-r-2x__z29W6 box_p-t-2x__M5RH8 box_p-b-2x__bSkd6 box_b-r-6__eFn6m box_sh-10__rHmX2 aside_aside__hEkR5 aside_info__6S1z3"><h4 class="box_m-b-1x__b2HHn text_base__bZ6a4 text_paragraph-30___agDz text_semi-bold-30__Z4S5R">Note</h4><div data-testid="aside-content"><p>Calling the <code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">verifyBuyer()</code> method in any of these APIs starts the SCA flow.</p></div></div><div data-markdown-heading="2" class="box_m-t-5x__L06CC box_m-b-2x__nVJGZ"><a href="#requirements-and-limitations" id="requirements-and-limitations" aria-label="anchor link for requirements-and-limitations" class="anchored-heading_anchor__JhuiX"></a><div class="anchored-heading_heading__2wlPu"><div class="anchored-heading_container__rfGXv"><market-tooltip popover-placement="top-start"><a data-tracking-id="heading-anchor" role="link" tabindex="0" slot="trigger" aria-label="click to copy link for requirements-and-limitations" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 anchored-heading_trigger__XOE12 anchored-heading_button__TMpy8"><svg width="16" height="16" viewBox="0 0 16 16" class="anchored-heading_icon__4HlYl"><path d="M10.432 1.032c-.641.093-.887.239-1.099.649-.056.109-.07.184-.071.391-.001.229.009.276.097.455a.921.921 0 0 0 .486.471c.198.092.446.102.849.035.807-.133 1.657.312 2.034 1.065.161.321.212.538.212.9 0 .361-.05.573-.216.916-.122.254-.131.262-1.778 1.91C9.299 9.471 9.29 9.48 9.036 9.602c-.375.182-.572.223-.988.207-.538-.021-.887-.163-1.303-.533-.259-.23-.453-.312-.741-.313a.971.971 0 0 0-.681.263c-.2.18-.29.382-.304.684-.017.354.065.54.365.829.502.484 1.096.81 1.797.986.424.107 1.137.133 1.589.059.366-.06.832-.209 1.141-.364.549-.276.665-.378 2.46-2.172 1.462-1.462 1.725-1.738 1.886-1.982.483-.732.692-1.417.692-2.269 0-1.11-.398-2.063-1.189-2.844a3.97 3.97 0 0 0-2.019-1.074 4.553 4.553 0 0 0-1.309-.047M6.93 3.694a4.276 4.276 0 0 0-1.955.778c-.103.074-.931.877-1.839 1.786C1.352 8.041 1.242 8.167.959 8.75c-.171.354-.25.583-.336.974-.083.379-.088 1.156-.011 1.518.34 1.59 1.458 2.767 2.996 3.155.256.065.401.081.835.093 1.025.028 1.494-.153 1.731-.666a.786.786 0 0 0 .082-.411.753.753 0 0 0-.098-.426 1.004 1.004 0 0 0-.482-.476c-.157-.077-.462-.089-.897-.036-.628.078-1.179-.115-1.645-.575a1.563 1.563 0 0 1-.354-.495c-.3-.608-.3-1.185-.001-1.799l.14-.285 1.64-1.639c1.567-1.566 1.65-1.644 1.88-1.761.34-.173.568-.228.946-.228.525 0 .954.164 1.36.522.293.257.404.307.714.323.234.012.277.005.442-.069.226-.101.452-.331.533-.54.084-.22.078-.58-.014-.787-.128-.287-.727-.792-1.249-1.053-.64-.319-1.553-.48-2.241-.395" fill-rule="evenodd"></path></svg></a><span slot="content">Link to section</span></market-tooltip></div><h2 class="heading_base__MS64u heading_heading-30__MH4YZ">Requirements and limitations</h2></div></div><p>Currently, when paying online, customers must enter their card number, expiration date, CVV, and postal code to make a payment. Buyers are required to complete two of the three factors of authentication when initiating a payment: something they know, something they own, and something they are. For online card payments, the SCA requirements are met by implementing 3DS. For in-store payments, SCA requirements are met through the use of chip and PIN or mobile wallets. Payments without this additional authentication are declined by the cardholder's bank. Payments initiated by sellers, such as recurring transactions or mail-order/telephone order (MOTO), don't require SCA.</p><p><img src="https://images.ctfassets.net/1nw4q0oohfju/5bvK1593kQplQ5XYZtJIyy/3b40c145a89d5a2b139ded95e6c141a6/3D-Secure-SCA-Intro.png?fm=webp" alt="A graphic showing the three elements of a multi-factor authentication, which are something you know, something you have, and something you are."/></p><div data-markdown-heading="2" class="box_m-t-5x__L06CC box_m-b-2x__nVJGZ"><a href="#what-is-sca" id="what-is-sca" aria-label="anchor link for what-is-sca" class="anchored-heading_anchor__JhuiX"></a><div class="anchored-heading_heading__2wlPu"><div class="anchored-heading_container__rfGXv"><market-tooltip popover-placement="top-start"><a data-tracking-id="heading-anchor" role="link" tabindex="0" slot="trigger" aria-label="click to copy link for what-is-sca" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 anchored-heading_trigger__XOE12 anchored-heading_button__TMpy8"><svg width="16" height="16" viewBox="0 0 16 16" class="anchored-heading_icon__4HlYl"><path d="M10.432 1.032c-.641.093-.887.239-1.099.649-.056.109-.07.184-.071.391-.001.229.009.276.097.455a.921.921 0 0 0 .486.471c.198.092.446.102.849.035.807-.133 1.657.312 2.034 1.065.161.321.212.538.212.9 0 .361-.05.573-.216.916-.122.254-.131.262-1.778 1.91C9.299 9.471 9.29 9.48 9.036 9.602c-.375.182-.572.223-.988.207-.538-.021-.887-.163-1.303-.533-.259-.23-.453-.312-.741-.313a.971.971 0 0 0-.681.263c-.2.18-.29.382-.304.684-.017.354.065.54.365.829.502.484 1.096.81 1.797.986.424.107 1.137.133 1.589.059.366-.06.832-.209 1.141-.364.549-.276.665-.378 2.46-2.172 1.462-1.462 1.725-1.738 1.886-1.982.483-.732.692-1.417.692-2.269 0-1.11-.398-2.063-1.189-2.844a3.97 3.97 0 0 0-2.019-1.074 4.553 4.553 0 0 0-1.309-.047M6.93 3.694a4.276 4.276 0 0 0-1.955.778c-.103.074-.931.877-1.839 1.786C1.352 8.041 1.242 8.167.959 8.75c-.171.354-.25.583-.336.974-.083.379-.088 1.156-.011 1.518.34 1.59 1.458 2.767 2.996 3.155.256.065.401.081.835.093 1.025.028 1.494-.153 1.731-.666a.786.786 0 0 0 .082-.411.753.753 0 0 0-.098-.426 1.004 1.004 0 0 0-.482-.476c-.157-.077-.462-.089-.897-.036-.628.078-1.179-.115-1.645-.575a1.563 1.563 0 0 1-.354-.495c-.3-.608-.3-1.185-.001-1.799l.14-.285 1.64-1.639c1.567-1.566 1.65-1.644 1.88-1.761.34-.173.568-.228.946-.228.525 0 .954.164 1.36.522.293.257.404.307.714.323.234.012.277.005.442-.069.226-.101.452-.331.533-.54.084-.22.078-.58-.014-.787-.128-.287-.727-.792-1.249-1.053-.64-.319-1.553-.48-2.241-.395" fill-rule="evenodd"></path></svg></a><span slot="content">Link to section</span></market-tooltip></div><h2 class="heading_base__MS64u heading_heading-30__MH4YZ">What is SCA?</h2></div></div><p>SCA is a standard protocol developed by a collaboration of several payment card issuers. It defines a multi-factor authentication mechanism that can be used to satisfy authentication requirements in regions wherever SCA is required.</p><p>SCA can also be used to authenticate buyers in countries where SCA isn't a requirement. In those countries, Square provides the SCA mechanism for those sellers who opt to use it. SCA creates the same buyer experience regardless of whether it's initiated from an SCA-required country. For more information, see <span slot="trigger"><a data-tracking-id="markdown-link" href="https://squareup.com/help/gb/en/article/7373-strong-customer-authentication-faq" class="nodes_markdown-link__1J6_a">Strong Customer Authentication FAQ</a></span>.</p><div data-markdown-heading="2" class="box_m-t-5x__L06CC box_m-b-2x__nVJGZ"><a href="#liability-shift" id="liability-shift" aria-label="anchor link for liability-shift" class="anchored-heading_anchor__JhuiX"></a><div class="anchored-heading_heading__2wlPu"><div class="anchored-heading_container__rfGXv"><market-tooltip popover-placement="top-start"><a data-tracking-id="heading-anchor" role="link" tabindex="0" slot="trigger" aria-label="click to copy link for liability-shift" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 anchored-heading_trigger__XOE12 anchored-heading_button__TMpy8"><svg width="16" height="16" viewBox="0 0 16 16" class="anchored-heading_icon__4HlYl"><path d="M10.432 1.032c-.641.093-.887.239-1.099.649-.056.109-.07.184-.071.391-.001.229.009.276.097.455a.921.921 0 0 0 .486.471c.198.092.446.102.849.035.807-.133 1.657.312 2.034 1.065.161.321.212.538.212.9 0 .361-.05.573-.216.916-.122.254-.131.262-1.778 1.91C9.299 9.471 9.29 9.48 9.036 9.602c-.375.182-.572.223-.988.207-.538-.021-.887-.163-1.303-.533-.259-.23-.453-.312-.741-.313a.971.971 0 0 0-.681.263c-.2.18-.29.382-.304.684-.017.354.065.54.365.829.502.484 1.096.81 1.797.986.424.107 1.137.133 1.589.059.366-.06.832-.209 1.141-.364.549-.276.665-.378 2.46-2.172 1.462-1.462 1.725-1.738 1.886-1.982.483-.732.692-1.417.692-2.269 0-1.11-.398-2.063-1.189-2.844a3.97 3.97 0 0 0-2.019-1.074 4.553 4.553 0 0 0-1.309-.047M6.93 3.694a4.276 4.276 0 0 0-1.955.778c-.103.074-.931.877-1.839 1.786C1.352 8.041 1.242 8.167.959 8.75c-.171.354-.25.583-.336.974-.083.379-.088 1.156-.011 1.518.34 1.59 1.458 2.767 2.996 3.155.256.065.401.081.835.093 1.025.028 1.494-.153 1.731-.666a.786.786 0 0 0 .082-.411.753.753 0 0 0-.098-.426 1.004 1.004 0 0 0-.482-.476c-.157-.077-.462-.089-.897-.036-.628.078-1.179-.115-1.645-.575a1.563 1.563 0 0 1-.354-.495c-.3-.608-.3-1.185-.001-1.799l.14-.285 1.64-1.639c1.567-1.566 1.65-1.644 1.88-1.761.34-.173.568-.228.946-.228.525 0 .954.164 1.36.522.293.257.404.307.714.323.234.012.277.005.442-.069.226-.101.452-.331.533-.54.084-.22.078-.58-.014-.787-.128-.287-.727-.792-1.249-1.053-.64-.319-1.553-.48-2.241-.395" fill-rule="evenodd"></path></svg></a><span slot="content">Link to section</span></market-tooltip></div><h2 class="heading_base__MS64u heading_heading-30__MH4YZ">Liability shift</h2></div></div><p>Before Square implemented SCA for payments, a seller could be liable for payment card chargebacks for online payments. For card present payments, sellers aren't liable for fraud. With SCA, the liability for fraudulent chargebacks is shifted to the card issuer in most cases. This liability shift to the issuer occurs when the payment is authenticated through SCA and the card involved is a Mastercard, American Express, JCB, Visa, Diners Club International or UnionPay card. Any of these cards that can be saved on file with Square can also use SCA. For more information, see <span slot="trigger"><a data-tracking-id="markdown-link" href="/docs/web-payments/sca-charge-card-on-file" class="nodes_markdown-link__1J6_a">Charge a Card on File with SCA</a></span>.</p><p>As long as <code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">verifyBuyer</code> has been called to start the SCA flow before processing payments, most of them will be protected from fraud liability when the issuer authorized the transaction. This still applies even if the issuer is unable to support 3D Secure.</p><div data-markdown-heading="2" class="box_m-t-5x__L06CC box_m-b-2x__nVJGZ"><a href="#do-i-need-to-support-sca" id="do-i-need-to-support-sca" aria-label="anchor link for do-i-need-to-support-sca" class="anchored-heading_anchor__JhuiX"></a><div class="anchored-heading_heading__2wlPu"><div class="anchored-heading_container__rfGXv"><market-tooltip popover-placement="top-start"><a data-tracking-id="heading-anchor" role="link" tabindex="0" slot="trigger" aria-label="click to copy link for do-i-need-to-support-sca" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 anchored-heading_trigger__XOE12 anchored-heading_button__TMpy8"><svg width="16" height="16" viewBox="0 0 16 16" class="anchored-heading_icon__4HlYl"><path d="M10.432 1.032c-.641.093-.887.239-1.099.649-.056.109-.07.184-.071.391-.001.229.009.276.097.455a.921.921 0 0 0 .486.471c.198.092.446.102.849.035.807-.133 1.657.312 2.034 1.065.161.321.212.538.212.9 0 .361-.05.573-.216.916-.122.254-.131.262-1.778 1.91C9.299 9.471 9.29 9.48 9.036 9.602c-.375.182-.572.223-.988.207-.538-.021-.887-.163-1.303-.533-.259-.23-.453-.312-.741-.313a.971.971 0 0 0-.681.263c-.2.18-.29.382-.304.684-.017.354.065.54.365.829.502.484 1.096.81 1.797.986.424.107 1.137.133 1.589.059.366-.06.832-.209 1.141-.364.549-.276.665-.378 2.46-2.172 1.462-1.462 1.725-1.738 1.886-1.982.483-.732.692-1.417.692-2.269 0-1.11-.398-2.063-1.189-2.844a3.97 3.97 0 0 0-2.019-1.074 4.553 4.553 0 0 0-1.309-.047M6.93 3.694a4.276 4.276 0 0 0-1.955.778c-.103.074-.931.877-1.839 1.786C1.352 8.041 1.242 8.167.959 8.75c-.171.354-.25.583-.336.974-.083.379-.088 1.156-.011 1.518.34 1.59 1.458 2.767 2.996 3.155.256.065.401.081.835.093 1.025.028 1.494-.153 1.731-.666a.786.786 0 0 0 .082-.411.753.753 0 0 0-.098-.426 1.004 1.004 0 0 0-.482-.476c-.157-.077-.462-.089-.897-.036-.628.078-1.179-.115-1.645-.575a1.563 1.563 0 0 1-.354-.495c-.3-.608-.3-1.185-.001-1.799l.14-.285 1.64-1.639c1.567-1.566 1.65-1.644 1.88-1.761.34-.173.568-.228.946-.228.525 0 .954.164 1.36.522.293.257.404.307.714.323.234.012.277.005.442-.069.226-.101.452-.331.533-.54.084-.22.078-.58-.014-.787-.128-.287-.727-.792-1.249-1.053-.64-.319-1.553-.48-2.241-.395" fill-rule="evenodd"></path></svg></a><span slot="content">Link to section</span></market-tooltip></div><h2 class="heading_base__MS64u heading_heading-30__MH4YZ">Do I need to support SCA?</h2></div></div><p>Square advises all Square developers and partners operating in the European Economic Area (EEA), including the UK, to take appropriate steps to be ready for SCA enforcement starting January 1, 2021, to avoid an increase in declined payments for European cardholders.</p><p>In the UK, banks started asking their cardholders to complete SCA, with full enforcement of the SCA requirements by March 14, 2022. Across the rest of the EEA, banks are ramping up SCA enforcement starting January 1, 2021, with a staggered ramp-up through 2021.</p><p>Square provides SCA features for the <span slot="trigger"><a data-tracking-id="markdown-link" href="/docs/web-payments/sca" class="nodes_markdown-link__1J6_a">Web Payments SDK</a></span> and <span slot="trigger"><a data-tracking-id="markdown-link" href="/docs/in-app-payments-sdk/verify-buyer" class="nodes_markdown-link__1J6_a">In-App Payments SDK</a></span> within Europe, where the business taking the payment and the cardholder's bank are both in the EEA.</p><div data-testid="aside" data-test-type="info" class="box_m-t-4x__FOwYa box_m-b-4x__jr_IJ box_p-l-2x__0A2_9 box_p-r-2x__z29W6 box_p-t-2x__M5RH8 box_p-b-2x__bSkd6 box_b-r-6__eFn6m box_sh-10__rHmX2 aside_aside__hEkR5 aside_info__6S1z3"><h4 class="box_m-b-1x__b2HHn text_base__bZ6a4 text_paragraph-30___agDz text_semi-bold-30__Z4S5R">Note</h4><div data-testid="aside-content"><p>SCA isn't required for in-person payment solutions such as the Square Point of Sale API or Reader SDK applications.</p></div></div><div data-markdown-heading="2" class="box_m-t-5x__L06CC box_m-b-2x__nVJGZ"><a href="#how-is-square-helping-me-prepare-for-sca" id="how-is-square-helping-me-prepare-for-sca" aria-label="anchor link for how-is-square-helping-me-prepare-for-sca" class="anchored-heading_anchor__JhuiX"></a><div class="anchored-heading_heading__2wlPu"><div class="anchored-heading_container__rfGXv"><market-tooltip popover-placement="top-start"><a data-tracking-id="heading-anchor" role="link" tabindex="0" slot="trigger" aria-label="click to copy link for how-is-square-helping-me-prepare-for-sca" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 anchored-heading_trigger__XOE12 anchored-heading_button__TMpy8"><svg width="16" height="16" viewBox="0 0 16 16" class="anchored-heading_icon__4HlYl"><path d="M10.432 1.032c-.641.093-.887.239-1.099.649-.056.109-.07.184-.071.391-.001.229.009.276.097.455a.921.921 0 0 0 .486.471c.198.092.446.102.849.035.807-.133 1.657.312 2.034 1.065.161.321.212.538.212.9 0 .361-.05.573-.216.916-.122.254-.131.262-1.778 1.91C9.299 9.471 9.29 9.48 9.036 9.602c-.375.182-.572.223-.988.207-.538-.021-.887-.163-1.303-.533-.259-.23-.453-.312-.741-.313a.971.971 0 0 0-.681.263c-.2.18-.29.382-.304.684-.017.354.065.54.365.829.502.484 1.096.81 1.797.986.424.107 1.137.133 1.589.059.366-.06.832-.209 1.141-.364.549-.276.665-.378 2.46-2.172 1.462-1.462 1.725-1.738 1.886-1.982.483-.732.692-1.417.692-2.269 0-1.11-.398-2.063-1.189-2.844a3.97 3.97 0 0 0-2.019-1.074 4.553 4.553 0 0 0-1.309-.047M6.93 3.694a4.276 4.276 0 0 0-1.955.778c-.103.074-.931.877-1.839 1.786C1.352 8.041 1.242 8.167.959 8.75c-.171.354-.25.583-.336.974-.083.379-.088 1.156-.011 1.518.34 1.59 1.458 2.767 2.996 3.155.256.065.401.081.835.093 1.025.028 1.494-.153 1.731-.666a.786.786 0 0 0 .082-.411.753.753 0 0 0-.098-.426 1.004 1.004 0 0 0-.482-.476c-.157-.077-.462-.089-.897-.036-.628.078-1.179-.115-1.645-.575a1.563 1.563 0 0 1-.354-.495c-.3-.608-.3-1.185-.001-1.799l.14-.285 1.64-1.639c1.567-1.566 1.65-1.644 1.88-1.761.34-.173.568-.228.946-.228.525 0 .954.164 1.36.522.293.257.404.307.714.323.234.012.277.005.442-.069.226-.101.452-.331.533-.54.084-.22.078-.58-.014-.787-.128-.287-.727-.792-1.249-1.053-.64-.319-1.553-.48-2.241-.395" fill-rule="evenodd"></path></svg></a><span slot="content">Link to section</span></market-tooltip></div><h2 class="heading_base__MS64u heading_heading-30__MH4YZ">How is Square helping me prepare for SCA?</h2></div></div><p>Sellers that integrate their applications with Square APIs need to flag buyer-initiated or seller-initiated payments by using the <span slot="trigger"><a data-tracking-id="markdown-link" href="https://developer.squareup.com/reference/square/objects/CustomerDetails" class="nodes_markdown-link__1J6_a">CustomerDetails</a></span> object with the Payments API <span slot="trigger"><a data-tracking-id="markdown-link" href="https://developer.squareup.com/reference/square/payments-api/create-payment" class="nodes_markdown-link__1J6_a">CreatePayment</a></span> endpoint. The <code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">CustomerDetails</code> object accepts Booleans on customer initiated payments and seller keyed-in payment details:</p><div class="box_m-t-5x__L06CC box_m-b-5x__RvXTy table_outer__9zV2D"><div data-testid="table" class="table_container__Ze6L1"><table class="table_table__wDx_x"><thead><tr><th class="box_p-l-1x__RpeQN box_p-r-1x__PmqSN box_p-t-15x__Jahzv box_p-b-15x__1eVvO box_b-b-l-std__q5XI3 text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy table_left__1NzD_">Key</th><th class="box_p-l-1x__RpeQN box_p-r-1x__PmqSN box_p-t-15x__Jahzv box_p-b-15x__1eVvO box_b-b-l-std__q5XI3 text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy table_left__1NzD_">Value (Boolean type)</th></tr></thead><tbody><tr><td class="box_p-l-1x__RpeQN box_p-r-1x__PmqSN box_p-t-15x__Jahzv box_p-b-15x__1eVvO box_b-b-l-20__JXIoJ text_base__bZ6a4 text_paragraph-20__2lYBq table_left__1NzD_"><code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">customer_initiated</code></td><td class="box_p-l-1x__RpeQN box_p-r-1x__PmqSN box_p-t-15x__Jahzv box_p-b-15x__1eVvO box_b-b-l-20__JXIoJ text_base__bZ6a4 text_paragraph-20__2lYBq table_left__1NzD_"><code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">true</code> or <code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">false</code></td></tr><tr><td class="box_p-l-1x__RpeQN box_p-r-1x__PmqSN box_p-t-15x__Jahzv box_p-b-15x__1eVvO box_b-b-l-20__JXIoJ text_base__bZ6a4 text_paragraph-20__2lYBq table_left__1NzD_"><code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">seller_keyed_in</code></td><td class="box_p-l-1x__RpeQN box_p-r-1x__PmqSN box_p-t-15x__Jahzv box_p-b-15x__1eVvO box_b-b-l-20__JXIoJ text_base__bZ6a4 text_paragraph-20__2lYBq table_left__1NzD_"><code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">true</code> or <code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">false</code></td></tr></tbody></table></div></div><p>Developers and partners that use Square developer products (such as the Web Payments SDK, In-App Payments SDK, and Square APIs) must ensure that their applications are SCA-compliant to minimize the impact of declined payments by following these guidelines:</p><ul><li><p>If the buyer is present and initiates the payment, call <span slot="trigger"><a data-tracking-id="markdown-link" href="https://developer.squareup.com/reference/sdks/web/payments/objects/Payments#Payments.verifyBuyer" class="nodes_markdown-link__1J6_a">Payments.verifyBuyer</a></span> and set <span slot="trigger"><a data-tracking-id="markdown-link" href="https://developer.squareup.com/reference/square/objects/CustomerDetails#definition__property-customer_initiated" class="nodes_markdown-link__1J6_a">CustomerDetails.customer_initiated</a></span> to <code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">true</code>.</p></li><li><p>If the buyer initiates the payment, but is not present (such as for a mail order / telephone only (MOTO) payment), then you don't need to call <span slot="trigger"><a data-tracking-id="markdown-link" href="https://developer.squareup.com/reference/sdks/web/payments/objects/Payments#Payments.verifyBuyer" class="nodes_markdown-link__1J6_a">Payments.verifyBuyer</a></span>, but instead set <span slot="trigger"><a data-tracking-id="markdown-link" href="https://developer.squareup.com/reference/square/objects/CustomerDetails#definition__property-customer_initiated" class="nodes_markdown-link__1J6_a">CustomerDetails.customer_initiated</a></span> to <code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">true</code>, and <span slot="trigger"><a data-tracking-id="markdown-link" href="https://developer.squareup.com/reference/square/objects/CustomerDetails#definition__property-seller_keyed_in" class="nodes_markdown-link__1J6_a">CustomerDetails.seller_keyed_in</a></span> to <code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">true</code>.</p></li><li><p>If the seller initiates the payment and the buyer is not present, then you don't need to call <span slot="trigger"><a data-tracking-id="markdown-link" href="https://developer.squareup.com/reference/sdks/web/payments/objects/Payments#Payments.verifyBuyer" class="nodes_markdown-link__1J6_a">Payments.verifyBuyer</a></span>, but instead set <span slot="trigger"><a data-tracking-id="markdown-link" href="https://developer.squareup.com/reference/square/objects/CustomerDetails#definition__property-customer_initiated" class="nodes_markdown-link__1J6_a">CustomerDetails.customer_initiated</a></span> to <code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">false</code>.</p></li></ul><p>Sellers that use Square Online and Square Invoices have their integrations managed by Square and don't need to flag transactions for SCA authentication.</p><div data-testid="aside" data-test-type="important" class="box_m-t-4x__FOwYa box_m-b-4x__jr_IJ box_p-l-2x__0A2_9 box_p-r-2x__z29W6 box_p-t-2x__M5RH8 box_p-b-2x__bSkd6 box_b-r-6__eFn6m box_sh-10__rHmX2 aside_aside__hEkR5 aside_important__lujns"><h4 class="box_m-b-1x__b2HHn text_base__bZ6a4 text_paragraph-30___agDz text_semi-bold-30__Z4S5R">Important</h4><div data-testid="aside-content"><ul><li>SCA should be invoked through the <code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">verifyBuyer()</code> function only when the buyer is present and has initiated the transaction.</li><li>In the EU, payments that don't provide authentication get a <code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">CARD_DECLINED_VERIFICATION_REQUIRED</code> error for transactions that require authentication. This error means that the seller didn't implement <code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">verifyBuyer</code> on the customer-initiated payments. For more information, see <span slot="trigger"><a data-tracking-id="markdown-link" href="https://developer.squareup.com/reference/sdks/web/payments/errors/VerifyBuyerError" class="nodes_markdown-link__1J6_a">VerifyBuyerError</a></span>.</li></ul></div></div><div data-markdown-heading="2" class="box_m-t-5x__L06CC box_m-b-2x__nVJGZ"><a href="#sca-in-non-mandated-markets" id="sca-in-non-mandated-markets" aria-label="anchor link for sca-in-non-mandated-markets" class="anchored-heading_anchor__JhuiX"></a><div class="anchored-heading_heading__2wlPu"><div class="anchored-heading_container__rfGXv"><market-tooltip popover-placement="top-start"><a data-tracking-id="heading-anchor" role="link" tabindex="0" slot="trigger" aria-label="click to copy link for sca-in-non-mandated-markets" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 anchored-heading_trigger__XOE12 anchored-heading_button__TMpy8"><svg width="16" height="16" viewBox="0 0 16 16" class="anchored-heading_icon__4HlYl"><path d="M10.432 1.032c-.641.093-.887.239-1.099.649-.056.109-.07.184-.071.391-.001.229.009.276.097.455a.921.921 0 0 0 .486.471c.198.092.446.102.849.035.807-.133 1.657.312 2.034 1.065.161.321.212.538.212.9 0 .361-.05.573-.216.916-.122.254-.131.262-1.778 1.91C9.299 9.471 9.29 9.48 9.036 9.602c-.375.182-.572.223-.988.207-.538-.021-.887-.163-1.303-.533-.259-.23-.453-.312-.741-.313a.971.971 0 0 0-.681.263c-.2.18-.29.382-.304.684-.017.354.065.54.365.829.502.484 1.096.81 1.797.986.424.107 1.137.133 1.589.059.366-.06.832-.209 1.141-.364.549-.276.665-.378 2.46-2.172 1.462-1.462 1.725-1.738 1.886-1.982.483-.732.692-1.417.692-2.269 0-1.11-.398-2.063-1.189-2.844a3.97 3.97 0 0 0-2.019-1.074 4.553 4.553 0 0 0-1.309-.047M6.93 3.694a4.276 4.276 0 0 0-1.955.778c-.103.074-.931.877-1.839 1.786C1.352 8.041 1.242 8.167.959 8.75c-.171.354-.25.583-.336.974-.083.379-.088 1.156-.011 1.518.34 1.59 1.458 2.767 2.996 3.155.256.065.401.081.835.093 1.025.028 1.494-.153 1.731-.666a.786.786 0 0 0 .082-.411.753.753 0 0 0-.098-.426 1.004 1.004 0 0 0-.482-.476c-.157-.077-.462-.089-.897-.036-.628.078-1.179-.115-1.645-.575a1.563 1.563 0 0 1-.354-.495c-.3-.608-.3-1.185-.001-1.799l.14-.285 1.64-1.639c1.567-1.566 1.65-1.644 1.88-1.761.34-.173.568-.228.946-.228.525 0 .954.164 1.36.522.293.257.404.307.714.323.234.012.277.005.442-.069.226-.101.452-.331.533-.54.084-.22.078-.58-.014-.787-.128-.287-.727-.792-1.249-1.053-.64-.319-1.553-.48-2.241-.395" fill-rule="evenodd"></path></svg></a><span slot="content">Link to section</span></market-tooltip></div><h2 class="heading_base__MS64u heading_heading-30__MH4YZ">SCA in non-mandated markets</h2></div></div><p>The SCA flow is started for a buyer if their payment card meets any of the conditions listed in the <span slot="trigger"><a data-tracking-id="markdown-link" href="https://squareup.com/help/us/en/article/6740-conditions-glossary" class="nodes_markdown-link__1J6_a">Square Risk Manager Glossary</a></span>. For sellers outside of regions that require SCA, Square provides a mechanism in <span slot="trigger"><a data-tracking-id="markdown-link" href="https://squareup.com/dashboard/risk-manager/rules" class="nodes_markdown-link__1J6_a">Risk Manager</a></span> to let them opt in for 3DS on a location basis. For example, a seller might have an in-person location, an in-person and online location, and an online only location. Online payments are card-not-present payments and benefit from the added security of 3DS. In this case, a seller might opt in for 3DS in those locations.</p><p>A payment card might trigger the SCA authentication flow and verify the identity of the buyer without generating a payment alert. A payment alert is only created in Risk Manager if the payment appears to be suspicious or fraudulent. Sellers in the European Union can use Risk Manager to manage potential fraud even though 3DS is enabled for them by default.</p><div data-markdown-heading="3" class="box_m-t-3x__rN_qC box_m-b-2x__nVJGZ"><a href="#enable-sca" id="enable-sca" aria-label="anchor link for enable-sca" class="anchored-heading_anchor__JhuiX"></a><div class="anchored-heading_heading__2wlPu"><div class="anchored-heading_container__rfGXv"><market-tooltip popover-placement="top-start"><a data-tracking-id="heading-anchor" role="link" tabindex="0" slot="trigger" aria-label="click to copy link for enable-sca" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 anchored-heading_trigger__XOE12 anchored-heading_button__TMpy8"><svg width="16" height="16" viewBox="0 0 16 16" class="anchored-heading_icon__4HlYl"><path d="M10.432 1.032c-.641.093-.887.239-1.099.649-.056.109-.07.184-.071.391-.001.229.009.276.097.455a.921.921 0 0 0 .486.471c.198.092.446.102.849.035.807-.133 1.657.312 2.034 1.065.161.321.212.538.212.9 0 .361-.05.573-.216.916-.122.254-.131.262-1.778 1.91C9.299 9.471 9.29 9.48 9.036 9.602c-.375.182-.572.223-.988.207-.538-.021-.887-.163-1.303-.533-.259-.23-.453-.312-.741-.313a.971.971 0 0 0-.681.263c-.2.18-.29.382-.304.684-.017.354.065.54.365.829.502.484 1.096.81 1.797.986.424.107 1.137.133 1.589.059.366-.06.832-.209 1.141-.364.549-.276.665-.378 2.46-2.172 1.462-1.462 1.725-1.738 1.886-1.982.483-.732.692-1.417.692-2.269 0-1.11-.398-2.063-1.189-2.844a3.97 3.97 0 0 0-2.019-1.074 4.553 4.553 0 0 0-1.309-.047M6.93 3.694a4.276 4.276 0 0 0-1.955.778c-.103.074-.931.877-1.839 1.786C1.352 8.041 1.242 8.167.959 8.75c-.171.354-.25.583-.336.974-.083.379-.088 1.156-.011 1.518.34 1.59 1.458 2.767 2.996 3.155.256.065.401.081.835.093 1.025.028 1.494-.153 1.731-.666a.786.786 0 0 0 .082-.411.753.753 0 0 0-.098-.426 1.004 1.004 0 0 0-.482-.476c-.157-.077-.462-.089-.897-.036-.628.078-1.179-.115-1.645-.575a1.563 1.563 0 0 1-.354-.495c-.3-.608-.3-1.185-.001-1.799l.14-.285 1.64-1.639c1.567-1.566 1.65-1.644 1.88-1.761.34-.173.568-.228.946-.228.525 0 .954.164 1.36.522.293.257.404.307.714.323.234.012.277.005.442-.069.226-.101.452-.331.533-.54.084-.22.078-.58-.014-.787-.128-.287-.727-.792-1.249-1.053-.64-.319-1.553-.48-2.241-.395" fill-rule="evenodd"></path></svg></a><span slot="content">Link to section</span></market-tooltip></div><h3 class="heading_base__MS64u heading_heading-20__RIpnh">Enable SCA</h3></div></div><p>To enable SCA, a non-EU seller uses an application integrated with a Square payments SDK to take a payment with a debit or credit card. If the application called the <code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">verifyBuyer</code> function when getting a payment token, the seller can enable SCA in Risk Manager for the location that called the function. When enabled, SCA is active until the seller disables it. SCA cannot be enabled until <code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">verifyBuyer</code> has been called by the application at least once.</p><div data-testid="aside" data-test-type="important" class="box_m-t-4x__FOwYa box_m-b-4x__jr_IJ box_p-l-2x__0A2_9 box_p-r-2x__z29W6 box_p-t-2x__M5RH8 box_p-b-2x__bSkd6 box_b-r-6__eFn6m box_sh-10__rHmX2 aside_aside__hEkR5 aside_important__lujns"><h4 class="box_m-b-1x__b2HHn text_base__bZ6a4 text_paragraph-30___agDz text_semi-bold-30__Z4S5R">Important</h4><div data-testid="aside-content"><p>SCA and Risk Manager aren't currently supported for Japan-based sellers.</p></div></div><div data-markdown-heading="2" class="box_m-t-5x__L06CC box_m-b-2x__nVJGZ"><a href="#buyer-verification-and-other-authentication-mechanisms" id="buyer-verification-and-other-authentication-mechanisms" aria-label="anchor link for buyer-verification-and-other-authentication-mechanisms" class="anchored-heading_anchor__JhuiX"></a><div class="anchored-heading_heading__2wlPu"><div class="anchored-heading_container__rfGXv"><market-tooltip popover-placement="top-start"><a data-tracking-id="heading-anchor" role="link" tabindex="0" slot="trigger" aria-label="click to copy link for buyer-verification-and-other-authentication-mechanisms" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 anchored-heading_trigger__XOE12 anchored-heading_button__TMpy8"><svg width="16" height="16" viewBox="0 0 16 16" class="anchored-heading_icon__4HlYl"><path d="M10.432 1.032c-.641.093-.887.239-1.099.649-.056.109-.07.184-.071.391-.001.229.009.276.097.455a.921.921 0 0 0 .486.471c.198.092.446.102.849.035.807-.133 1.657.312 2.034 1.065.161.321.212.538.212.9 0 .361-.05.573-.216.916-.122.254-.131.262-1.778 1.91C9.299 9.471 9.29 9.48 9.036 9.602c-.375.182-.572.223-.988.207-.538-.021-.887-.163-1.303-.533-.259-.23-.453-.312-.741-.313a.971.971 0 0 0-.681.263c-.2.18-.29.382-.304.684-.017.354.065.54.365.829.502.484 1.096.81 1.797.986.424.107 1.137.133 1.589.059.366-.06.832-.209 1.141-.364.549-.276.665-.378 2.46-2.172 1.462-1.462 1.725-1.738 1.886-1.982.483-.732.692-1.417.692-2.269 0-1.11-.398-2.063-1.189-2.844a3.97 3.97 0 0 0-2.019-1.074 4.553 4.553 0 0 0-1.309-.047M6.93 3.694a4.276 4.276 0 0 0-1.955.778c-.103.074-.931.877-1.839 1.786C1.352 8.041 1.242 8.167.959 8.75c-.171.354-.25.583-.336.974-.083.379-.088 1.156-.011 1.518.34 1.59 1.458 2.767 2.996 3.155.256.065.401.081.835.093 1.025.028 1.494-.153 1.731-.666a.786.786 0 0 0 .082-.411.753.753 0 0 0-.098-.426 1.004 1.004 0 0 0-.482-.476c-.157-.077-.462-.089-.897-.036-.628.078-1.179-.115-1.645-.575a1.563 1.563 0 0 1-.354-.495c-.3-.608-.3-1.185-.001-1.799l.14-.285 1.64-1.639c1.567-1.566 1.65-1.644 1.88-1.761.34-.173.568-.228.946-.228.525 0 .954.164 1.36.522.293.257.404.307.714.323.234.012.277.005.442-.069.226-.101.452-.331.533-.54.084-.22.078-.58-.014-.787-.128-.287-.727-.792-1.249-1.053-.64-.319-1.553-.48-2.241-.395" fill-rule="evenodd"></path></svg></a><span slot="content">Link to section</span></market-tooltip></div><h2 class="heading_base__MS64u heading_heading-30__MH4YZ">Buyer verification and other authentication mechanisms</h2></div></div><p>You can also configure the application to call <code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">verifyBuyer</code> and enable other authentication mechanisms, as the buyer verification process checks if the application has any verification method to apply to the payment. Currently, SCA is the only authentication mechanism that Square supports.</p><div data-markdown-heading="2" class="box_m-t-5x__L06CC box_m-b-2x__nVJGZ"><a href="#how-it-works" id="how-it-works" aria-label="anchor link for how-it-works" class="anchored-heading_anchor__JhuiX"></a><div class="anchored-heading_heading__2wlPu"><div class="anchored-heading_container__rfGXv"><market-tooltip popover-placement="top-start"><a data-tracking-id="heading-anchor" role="link" tabindex="0" slot="trigger" aria-label="click to copy link for how-it-works" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 anchored-heading_trigger__XOE12 anchored-heading_button__TMpy8"><svg width="16" height="16" viewBox="0 0 16 16" class="anchored-heading_icon__4HlYl"><path d="M10.432 1.032c-.641.093-.887.239-1.099.649-.056.109-.07.184-.071.391-.001.229.009.276.097.455a.921.921 0 0 0 .486.471c.198.092.446.102.849.035.807-.133 1.657.312 2.034 1.065.161.321.212.538.212.9 0 .361-.05.573-.216.916-.122.254-.131.262-1.778 1.91C9.299 9.471 9.29 9.48 9.036 9.602c-.375.182-.572.223-.988.207-.538-.021-.887-.163-1.303-.533-.259-.23-.453-.312-.741-.313a.971.971 0 0 0-.681.263c-.2.18-.29.382-.304.684-.017.354.065.54.365.829.502.484 1.096.81 1.797.986.424.107 1.137.133 1.589.059.366-.06.832-.209 1.141-.364.549-.276.665-.378 2.46-2.172 1.462-1.462 1.725-1.738 1.886-1.982.483-.732.692-1.417.692-2.269 0-1.11-.398-2.063-1.189-2.844a3.97 3.97 0 0 0-2.019-1.074 4.553 4.553 0 0 0-1.309-.047M6.93 3.694a4.276 4.276 0 0 0-1.955.778c-.103.074-.931.877-1.839 1.786C1.352 8.041 1.242 8.167.959 8.75c-.171.354-.25.583-.336.974-.083.379-.088 1.156-.011 1.518.34 1.59 1.458 2.767 2.996 3.155.256.065.401.081.835.093 1.025.028 1.494-.153 1.731-.666a.786.786 0 0 0 .082-.411.753.753 0 0 0-.098-.426 1.004 1.004 0 0 0-.482-.476c-.157-.077-.462-.089-.897-.036-.628.078-1.179-.115-1.645-.575a1.563 1.563 0 0 1-.354-.495c-.3-.608-.3-1.185-.001-1.799l.14-.285 1.64-1.639c1.567-1.566 1.65-1.644 1.88-1.761.34-.173.568-.228.946-.228.525 0 .954.164 1.36.522.293.257.404.307.714.323.234.012.277.005.442-.069.226-.101.452-.331.533-.54.084-.22.078-.58-.014-.787-.128-.287-.727-.792-1.249-1.053-.64-.319-1.553-.48-2.241-.395" fill-rule="evenodd"></path></svg></a><span slot="content">Link to section</span></market-tooltip></div><h2 class="heading_base__MS64u heading_heading-30__MH4YZ">How it works</h2></div></div><p>Learn how SCA works by walking through the steps in the following example:</p><div class="box_m-t-5x__L06CC box_m-b-5x__RvXTy table_outer__9zV2D"><div data-testid="table" class="table_container__Ze6L1"><table class="table_table__wDx_x"><thead><tr><th class="box_p-l-1x__RpeQN box_p-r-1x__PmqSN box_p-t-15x__Jahzv box_p-b-15x__1eVvO box_b-b-l-std__q5XI3 text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy table_left__1NzD_">Step</th><th class="box_p-l-1x__RpeQN box_p-r-1x__PmqSN box_p-t-15x__Jahzv box_p-b-15x__1eVvO box_b-b-l-std__q5XI3 text_base__bZ6a4 text_paragraph-20__2lYBq text_medium-20__UlBGy table_left__1NzD_">Flow illustration</th></tr></thead><tbody><tr><td class="box_p-l-1x__RpeQN box_p-r-1x__PmqSN box_p-t-15x__Jahzv box_p-b-15x__1eVvO box_b-b-l-20__JXIoJ text_base__bZ6a4 text_paragraph-20__2lYBq table_left__1NzD_">1. Generate a token with the Square online payment SDK or in-app payment SDK. You can skip this step if you're charging a customer card on file.</td><td class="box_p-l-1x__RpeQN box_p-r-1x__PmqSN box_p-t-15x__Jahzv box_p-b-15x__1eVvO box_b-b-l-20__JXIoJ text_base__bZ6a4 text_paragraph-20__2lYBq table_left__1NzD_"><img src="https://images.ctfassets.net/1nw4q0oohfju/2YbLGUinW5VTw0stkoW3Xh/7c5c25575b1fd885169dc6fd0a737a97/01.png?fm=webp" alt="A graphic showing SCA being used."/></td></tr><tr><td class="box_p-l-1x__RpeQN box_p-r-1x__PmqSN box_p-t-15x__Jahzv box_p-b-15x__1eVvO box_b-b-l-20__JXIoJ text_base__bZ6a4 text_paragraph-20__2lYBq table_left__1NzD_">2. Call <code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">verifyBuyer()</code> with the payment token or the customer card ID and the transactional details. Square collects all the required device-based information.</td><td class="box_p-l-1x__RpeQN box_p-r-1x__PmqSN box_p-t-15x__Jahzv box_p-b-15x__1eVvO box_b-b-l-20__JXIoJ text_base__bZ6a4 text_paragraph-20__2lYBq table_left__1NzD_"><img src="https://images.ctfassets.net/1nw4q0oohfju/CRzuRIMj9ELje54XNnHtl/445dd88b5ca234f6ef0f716f5a067154/02.png?fm=webp" alt="A diagram showing a verifyBuyer() call with the payment token or the customer card ID and the transactional details."/></td></tr><tr><td class="box_p-l-1x__RpeQN box_p-r-1x__PmqSN box_p-t-15x__Jahzv box_p-b-15x__1eVvO box_b-b-l-20__JXIoJ text_base__bZ6a4 text_paragraph-20__2lYBq table_left__1NzD_">3. Square automatically checks whether the transaction requires Strong Customer Authentication.</td><td class="box_p-l-1x__RpeQN box_p-r-1x__PmqSN box_p-t-15x__Jahzv box_p-b-15x__1eVvO box_b-b-l-20__JXIoJ text_base__bZ6a4 text_paragraph-20__2lYBq table_left__1NzD_"><img src="https://images.ctfassets.net/1nw4q0oohfju/3dDkeugEudYynEo2OOnOdU/1afd24d49aab3402f9eaf7e1b86da1f8/03.png?fm=webp" alt="A diagram showing Square automatically checking whether the transaction requires Strong Customer Authentication."/></td></tr><tr><td class="box_p-l-1x__RpeQN box_p-r-1x__PmqSN box_p-t-15x__Jahzv box_p-b-15x__1eVvO box_b-b-l-20__JXIoJ text_base__bZ6a4 text_paragraph-20__2lYBq table_left__1NzD_">4. If a challenge is required, Square automatically displays the challenge to the buyer.</td><td class="box_p-l-1x__RpeQN box_p-r-1x__PmqSN box_p-t-15x__Jahzv box_p-b-15x__1eVvO box_b-b-l-20__JXIoJ text_base__bZ6a4 text_paragraph-20__2lYBq table_left__1NzD_"><img src="https://images.ctfassets.net/1nw4q0oohfju/zOVtidxnkIymXH4tGVGPz/62966fc0fbfb8a7a258560e76b85350f/04a.png?fm=webp" alt="A diagram showing the Bank Verification challenge."/></td></tr><tr><td class="box_p-l-1x__RpeQN box_p-r-1x__PmqSN box_p-t-15x__Jahzv box_p-b-15x__1eVvO box_b-b-l-20__JXIoJ text_base__bZ6a4 text_paragraph-20__2lYBq table_left__1NzD_">5. When the SCA process is complete, you get back a verification token.</td><td class="box_p-l-1x__RpeQN box_p-r-1x__PmqSN box_p-t-15x__Jahzv box_p-b-15x__1eVvO box_b-b-l-20__JXIoJ text_base__bZ6a4 text_paragraph-20__2lYBq table_left__1NzD_"><img src="https://images.ctfassets.net/1nw4q0oohfju/4YPIlOGn9Y81K80alxW2Ez/3e97cf31878ac1abbf8c6a06ca40229a/04b.png?fm=webp" alt="A screenshot showing that when the SCA process is complete, you get back a verification token."/></td></tr></tbody></table></div></div><div data-testid="aside" data-test-type="important" class="box_m-t-4x__FOwYa box_m-b-4x__jr_IJ box_p-l-2x__0A2_9 box_p-r-2x__z29W6 box_p-t-2x__M5RH8 box_p-b-2x__bSkd6 box_b-r-6__eFn6m box_sh-10__rHmX2 aside_aside__hEkR5 aside_important__lujns"><h4 class="box_m-b-1x__b2HHn text_base__bZ6a4 text_paragraph-30___agDz text_semi-bold-30__Z4S5R">Important</h4><div data-testid="aside-content"><p><strong>Custom risk-score based SCA authentication private beta</strong></p><p>If the seller has set up custom score rules and logic in Risk Manager, you can trigger SCA authentication based on the custom risk score by passing the custom risk score value in the <code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">verifyBuyer()</code> method call with the <code class="box_p-l-05x__pvvKi box_p-r-05x__PX6jO box_b-r-4__1LPp7 text_base__bZ6a4 text_paragraph-20__2lYBq text_code-field___GL_9 nodes_inline-code__HksNY">customScore</code> field. To try out this feature, contact your Square representative.</p></div></div><div data-markdown-heading="2" class="box_m-t-5x__L06CC box_m-b-2x__nVJGZ"><a href="#next-steps" id="next-steps" aria-label="anchor link for next-steps" class="anchored-heading_anchor__JhuiX"></a><div class="anchored-heading_heading__2wlPu"><div class="anchored-heading_container__rfGXv"><market-tooltip popover-placement="top-start"><a data-tracking-id="heading-anchor" role="link" tabindex="0" slot="trigger" aria-label="click to copy link for next-steps" class="box_b-r-6__eFn6m native-button_button__Iabj1 native-button_no-border__LHOho native-button_button-padding__xncbB focus-ring-styles_focus-ring__5P6v0 anchored-heading_trigger__XOE12 anchored-heading_button__TMpy8"><svg width="16" height="16" viewBox="0 0 16 16" class="anchored-heading_icon__4HlYl"><path d="M10.432 1.032c-.641.093-.887.239-1.099.649-.056.109-.07.184-.071.391-.001.229.009.276.097.455a.921.921 0 0 0 .486.471c.198.092.446.102.849.035.807-.133 1.657.312 2.034 1.065.161.321.212.538.212.9 0 .361-.05.573-.216.916-.122.254-.131.262-1.778 1.91C9.299 9.471 9.29 9.48 9.036 9.602c-.375.182-.572.223-.988.207-.538-.021-.887-.163-1.303-.533-.259-.23-.453-.312-.741-.313a.971.971 0 0 0-.681.263c-.2.18-.29.382-.304.684-.017.354.065.54.365.829.502.484 1.096.81 1.797.986.424.107 1.137.133 1.589.059.366-.06.832-.209 1.141-.364.549-.276.665-.378 2.46-2.172 1.462-1.462 1.725-1.738 1.886-1.982.483-.732.692-1.417.692-2.269 0-1.11-.398-2.063-1.189-2.844a3.97 3.97 0 0 0-2.019-1.074 4.553 4.553 0 0 0-1.309-.047M6.93 3.694a4.276 4.276 0 0 0-1.955.778c-.103.074-.931.877-1.839 1.786C1.352 8.041 1.242 8.167.959 8.75c-.171.354-.25.583-.336.974-.083.379-.088 1.156-.011 1.518.34 1.59 1.458 2.767 2.996 3.155.256.065.401.081.835.093 1.025.028 1.494-.153 1.731-.666a.786.786 0 0 0 .082-.411.753.753 0 0 0-.098-.426 1.004 1.004 0 0 0-.482-.476c-.157-.077-.462-.089-.897-.036-.628.078-1.179-.115-1.645-.575a1.563 1.563 0 0 1-.354-.495c-.3-.608-.3-1.185-.001-1.799l.14-.285 1.64-1.639c1.567-1.566 1.65-1.644 1.88-1.761.34-.173.568-.228.946-.228.525 0 .954.164 1.36.522.293.257.404.307.714.323.234.012.277.005.442-.069.226-.101.452-.331.533-.54.084-.22.078-.58-.014-.787-.128-.287-.727-.792-1.249-1.053-.64-.319-1.553-.48-2.241-.395" fill-rule="evenodd"></path></svg></a><span slot="content">Link to section</span></market-tooltip></div><h2 class="heading_base__MS64u heading_heading-30__MH4YZ">Next steps</h2></div></div><p>Implement SCA in your application to start the SCA flow by reading the following topics:</p><ul><li>For Web Payments SDK: <span slot="trigger"><a data-tracking-id="markdown-link" href="/docs/web-payments/sca" class="nodes_markdown-link__1J6_a">Add Strong Customer Authentication to a Card Payment</a></span></li><li>For In-App Payments SDK: <span slot="trigger"><a data-tracking-id="markdown-link" href="/docs/in-app-payments-sdk/verify-buyer" class="nodes_markdown-link__1J6_a">Verify a Buyer</a></span></li></ul></p></article></div></div></div><div class="box_m-t-8x__7Ip7V grid-item_grid-item-small__Xb5VI page-layout_sidebar-floating-toc__oeaXi"><div data-testid="ftoc" class="sticky-container_container__FNSI1 floating-toc_docs-floating-toc__UfFM_"><h5 data-testid="docs-heading" class="heading_base__MS64u heading_heading-5__lcRR4">On this page</h5><div data-testid="ftoc-scroll" class="box_m-t-1x__GR9iT box_m-b-1x__b2HHn floating-toc_docs-scrollable-el__7yERK"><a data-tracking-id="floating-toc-item" data-tracking-extra="{"title":"Overview"}" href="/docs/sca-overview-iap#overview" class="box_m-b-1x__b2HHn text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 sidebar-link_sidebar-link__hvuMG sidebar-link_sidebar-container__NFtV_ floating-toc_docs-item__J_ik3">Overview</a><a data-tracking-id="floating-toc-item" data-tracking-extra="{"title":"Requirements and limitations"}" href="/docs/sca-overview-iap#requirements-and-limitations" class="box_m-b-1x__b2HHn text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 sidebar-link_sidebar-link__hvuMG sidebar-link_sidebar-container__NFtV_ floating-toc_docs-item__J_ik3">Requirements and limitations</a><a data-tracking-id="floating-toc-item" data-tracking-extra="{"title":"What is SCA?"}" href="/docs/sca-overview-iap#what-is-sca" class="box_m-b-1x__b2HHn text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 sidebar-link_sidebar-link__hvuMG sidebar-link_sidebar-container__NFtV_ floating-toc_docs-item__J_ik3">What is SCA?</a><a data-tracking-id="floating-toc-item" data-tracking-extra="{"title":"Liability shift"}" href="/docs/sca-overview-iap#liability-shift" class="box_m-b-1x__b2HHn text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 sidebar-link_sidebar-link__hvuMG sidebar-link_sidebar-container__NFtV_ floating-toc_docs-item__J_ik3">Liability shift</a><a data-tracking-id="floating-toc-item" data-tracking-extra="{"title":"Do I need to support SCA?"}" href="/docs/sca-overview-iap#do-i-need-to-support-sca" class="box_m-b-1x__b2HHn text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 sidebar-link_sidebar-link__hvuMG sidebar-link_sidebar-container__NFtV_ floating-toc_docs-item__J_ik3">Do I need to support SCA?</a><a data-tracking-id="floating-toc-item" data-tracking-extra="{"title":"How is Square helping me prepare for SCA?"}" href="/docs/sca-overview-iap#how-is-square-helping-me-prepare-for-sca" class="box_m-b-1x__b2HHn text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 sidebar-link_sidebar-link__hvuMG sidebar-link_sidebar-container__NFtV_ floating-toc_docs-item__J_ik3">How is Square helping me prepare for SCA?</a><a data-tracking-id="floating-toc-item" data-tracking-extra="{"title":"SCA in non-mandated markets"}" href="/docs/sca-overview-iap#sca-in-non-mandated-markets" class="box_m-b-1x__b2HHn text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 sidebar-link_sidebar-link__hvuMG sidebar-link_sidebar-container__NFtV_ floating-toc_docs-item__J_ik3">SCA in non-mandated markets</a><a data-tracking-id="floating-toc-item" data-tracking-extra="{"title":"Buyer verification and other authentication mechanisms"}" href="/docs/sca-overview-iap#buyer-verification-and-other-authentication-mechanisms" class="box_m-b-1x__b2HHn text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 sidebar-link_sidebar-link__hvuMG sidebar-link_sidebar-container__NFtV_ floating-toc_docs-item__J_ik3">Buyer verification and other authentication mechanisms</a><a data-tracking-id="floating-toc-item" data-tracking-extra="{"title":"How it works"}" href="/docs/sca-overview-iap#how-it-works" class="box_m-b-1x__b2HHn text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 sidebar-link_sidebar-link__hvuMG sidebar-link_sidebar-container__NFtV_ floating-toc_docs-item__J_ik3">How it works</a><a data-tracking-id="floating-toc-item" data-tracking-extra="{"title":"Next steps"}" href="/docs/sca-overview-iap#next-steps" class="box_m-b-1x__b2HHn text_base__bZ6a4 text_paragraph-20__2lYBq text_color-20__myvq7 sidebar-link_sidebar-link__hvuMG sidebar-link_sidebar-container__NFtV_ floating-toc_docs-item__J_ik3">Next steps</a></div></div></div><div class="grid-item_grid-item-full__LsU8d"><div data-testid="docs-feedback-prompt" class="box_p-t-8x__SI6nV box_p-b-2x__bSkd6 box_b-t-l-10__Aa_Rv doc-feedback-prompt_container__E7_8O"><div class="box_m-b-2x__nVJGZ"><div class="feedback-widget_large__PmiLi"><div></div></div></div><article data-testid="markdown-doc" class="text_base__bZ6a4 text_paragraph-30___agDz nodes_article__2nMA2"><p>If you need more assistance, contact <span slot="trigger"><a data-tracking-id="markdown-link" href="https://squareup.com/help/contact?panel=BF53A9C8EF68" class="nodes_markdown-link__1J6_a">Developer and App Marketplace Support</a></span> or ask for help in the <span slot="trigger"><a data-tracking-id="markdown-link" 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Strong Customer Authentication (SCA) to verify buyers for online and in-app payments.","heading":{"title":"Strong Customer Authentication","browserTitle":"Strong Customer Authentication","releaseStatus":"PUBLIC"},"languagesSupported":["All"],"platforms":["All"],"leftNavId":"1JxXf5dweJNagXLkQOFGsh","content":[{"type":"markdown","name":"sca-overview : body","markdown":"**Applies to:** [In-App Payments SDK - Android](https://developer.{{SQUARE_DOMAIN}}/docs/api/in-app-payment/android/) | [In-App Payments SDK - iOS](https://developer.{{SQUARE_DOMAIN}}/docs/api/in-app-payment/ios) | [Web Payments SDK](web-payments/overview) | [Payments API](payments-refunds) | [Customers API](customers-api/what-it-does)\n\n{% subheading %}Learn how to use Strong Customer Authentication to verify buyers for online and in-app payments.\n{% /subheading %}\n\n{% toc hide=true /%}\n\n## Overview\n\nUse Strong Customer Authentication (SCA) with the Web Payment SDK and In-App Payments SDK to verify the buyer and reduce the chance of fraudulent transactions. SCA uses the [3D Secure (3DS)](https://www.emvco.com/emv-technologies/3d-secure/) protocol and in the [European Economic Area (EEA)](https://www.gov.uk/eu-eea).\n\n{% aside type=\"info\" %}\nCalling the `verifyBuyer()` method in any of these APIs starts the SCA flow.\n{% /aside %}\n\n## Requirements and limitations\n\nCurrently, when paying online, customers must enter their card number, expiration date, CVV, and postal code to make a payment. Buyers are required to complete two of the three factors of authentication when initiating a payment: something they know, something they own, and something they are. For online card payments, the SCA requirements are met by implementing 3DS. For in-store payments, SCA requirements are met through the use of chip and PIN or mobile wallets. Payments without this additional authentication are declined by the cardholder's bank. Payments initiated by sellers, such as recurring transactions or mail-order/telephone order (MOTO), don't require SCA.\n\n\n\n## What is SCA?\n\nSCA is a standard protocol developed by a collaboration of several payment card issuers. It defines a multi-factor authentication mechanism that can be used to satisfy authentication requirements in regions wherever SCA is required. \n\nSCA can also be used to authenticate buyers in countries where SCA isn't a requirement. In those countries, Square provides the SCA mechanism for those sellers who opt to use it. SCA creates the same buyer experience regardless of whether it's initiated from an SCA-required country. For more information, see [Strong Customer Authentication FAQ](https://squareup.com/help/gb/en/article/7373-strong-customer-authentication-faq).\n\n## Liability shift\n\nBefore Square implemented SCA for payments, a seller could be liable for payment card chargebacks for online payments. For card present payments, sellers aren't liable for fraud. With SCA, the liability for fraudulent chargebacks is shifted to the card issuer in most cases. This liability shift to the issuer occurs when the payment is authenticated through SCA and the card involved is a Mastercard, American Express, JCB, Visa, Diners Club International or UnionPay card. Any of these cards that can be saved on file with Square can also use SCA. For more information, see [Charge a Card on File with SCA](web-payments/sca-charge-card-on-file).\n\nAs long as `verifyBuyer` has been called to start the SCA flow before processing payments, most of them will be protected from fraud liability when the issuer authorized the transaction. This still applies even if the issuer is unable to support 3D Secure. \n\n## Do I need to support SCA?\n\nSquare advises all Square developers and partners operating in the European Economic Area (EEA), including the UK, to take appropriate steps to be ready for SCA enforcement starting January 1, 2021, to avoid an increase in declined payments for European cardholders.\n\nIn the UK, banks started asking their cardholders to complete SCA, with full enforcement of the SCA requirements by March 14, 2022. Across the rest of the EEA, banks are ramping up SCA enforcement starting January 1, 2021, with a staggered ramp-up through 2021.\n\nSquare provides SCA features for the [Web Payments SDK](web-payments/sca) and [In-App Payments SDK](in-app-payments-sdk/verify-buyer) within Europe, where the business taking the payment and the cardholder's bank are both in the EEA. \n\n{% aside type=\"info\" %}\nSCA isn't required for in-person payment solutions such as the Square Point of Sale API or Reader SDK applications.\n{% /aside %}\n\n## How is Square helping me prepare for SCA?\n\nSellers that integrate their applications with Square APIs need to flag buyer-initiated or seller-initiated payments by using the [CustomerDetails](https://developer.{{SQUARE_DOMAIN}}/reference/square/objects/CustomerDetails) object with the Payments API [CreatePayment](https://developer.{{SQUARE_DOMAIN}}/reference/square/payments-api/create-payment) endpoint. The `CustomerDetails` object accepts Booleans on customer initiated payments and seller keyed-in payment details:\n\n{% table %}\n* Key\n* Value (Boolean type)\n---\n* `customer_initiated`\n* `true` or `false`\n---\n* `seller_keyed_in`\n* `true` or `false`\n{% /table %}\n\nDevelopers and partners that use Square developer products (such as the Web Payments SDK, In-App Payments SDK, and Square APIs) must ensure that their applications are SCA-compliant to minimize the impact of declined payments by following these guidelines:\n\n- If the buyer is present and initiates the payment, call [Payments.verifyBuyer](https://developer.{{SQUARE_DOMAIN}}/reference/sdks/web/payments/objects/Payments#Payments.verifyBuyer) and set [CustomerDetails.customer_initiated](https://developer.{{SQUARE_DOMAIN}}/reference/square/objects/CustomerDetails#definition__property-customer_initiated) to `true`.\n\n- If the buyer initiates the payment, but is not present (such as for a mail order / telephone only (MOTO) payment), then you don't need to call [Payments.verifyBuyer](https://developer.{{SQUARE_DOMAIN}}/reference/sdks/web/payments/objects/Payments#Payments.verifyBuyer), but instead set [CustomerDetails.customer_initiated](https://developer.{{SQUARE_DOMAIN}}/reference/square/objects/CustomerDetails#definition__property-customer_initiated) to `true`, and [CustomerDetails.seller_keyed_in](https://developer.{{SQUARE_DOMAIN}}/reference/square/objects/CustomerDetails#definition__property-seller_keyed_in) to `true`.\n\n- If the seller initiates the payment and the buyer is not present, then you don't need to call [Payments.verifyBuyer](https://developer.{{SQUARE_DOMAIN}}/reference/sdks/web/payments/objects/Payments#Payments.verifyBuyer), but instead set [CustomerDetails.customer_initiated](https://developer.{{SQUARE_DOMAIN}}/reference/square/objects/CustomerDetails#definition__property-customer_initiated) to `false`.\n\nSellers that use Square Online and Square Invoices have their integrations managed by Square and don't need to flag transactions for SCA authentication.\n\n{% aside type=\"important\" %}\n* SCA should be invoked through the `verifyBuyer()` function only when the buyer is present and has initiated the transaction.\n* In the EU, payments that don't provide authentication get a `CARD_DECLINED_VERIFICATION_REQUIRED` error for transactions that require authentication. This error means that the seller didn't implement `verifyBuyer` on the customer-initiated payments. For more information, see [VerifyBuyerError](https://developer.{{SQUARE_DOMAIN}}/reference/sdks/web/payments/errors/VerifyBuyerError).\n{% /aside %}\n\n## SCA in non-mandated markets\n\nThe SCA flow is started for a buyer if their payment card meets any of the conditions listed in the [Square Risk Manager Glossary](https://squareup.com/help/us/en/article/6740-conditions-glossary). For sellers outside of regions that require SCA, Square provides a mechanism in [Risk Manager](https://squareup.com/dashboard/risk-manager/rules) to let them opt in for 3DS on a location basis. For example, a seller might have an in-person location, an in-person and online location, and an online only location. Online payments are card-not-present payments and benefit from the added security of 3DS. In this case, a seller might opt in for 3DS in those locations. \n\nA payment card might trigger the SCA authentication flow and verify the identity of the buyer without generating a payment alert. A payment alert is only created in Risk Manager if the payment appears to be suspicious or fraudulent. Sellers in the European Union can use Risk Manager to manage potential fraud even though 3DS is enabled for them by default. \n\n### Enable SCA\n\nTo enable SCA, a non-EU seller uses an application integrated with a Square payments SDK to take a payment with a debit or credit card. If the application called the `verifyBuyer` function when getting a payment token, the seller can enable SCA in Risk Manager for the location that called the function. When enabled, SCA is active until the seller disables it. SCA cannot be enabled until `verifyBuyer` has been called by the application at least once.\n\n{% aside type=\"important\" %}\nSCA and Risk Manager aren't currently supported for Japan-based sellers. \n{% /aside %}\n\n## Buyer verification and other authentication mechanisms\n\nYou can also configure the application to call `verifyBuyer` and enable other authentication mechanisms, as the buyer verification process checks if the application has any verification method to apply to the payment. Currently, SCA is the only authentication mechanism that Square supports.\n\n## How it works\n\nLearn how SCA works by walking through the steps in the following example:\n\n| Step | Flow illustration |\n|---|---|\n| 1. Generate a token with the Square online payment SDK or in-app payment SDK. You can skip this step if you're charging a customer card on file. |  |\n| 2. Call `verifyBuyer()` with the payment token or the customer card ID and the transactional details. Square collects all the required device-based information. | \n| 3. Square automatically checks whether the transaction requires Strong Customer Authentication. |  \n| 4. If a challenge is required, Square automatically displays the challenge to the buyer. |  |\n| 5. When the SCA process is complete, you get back a verification token. |  | 6. Use the verification token along with the payment token and customer card ID to charge the customer using Square APIs, version 2019-06-12 or newer. |  |\n\n!!!important\n__Custom risk-score based SCA authentication private beta__\n\nIf the seller has set up custom score rules and logic in Risk Manager, you can trigger SCA authentication based on the custom risk score by passing the custom risk score value in the `verifyBuyer()` method call with the `customScore` field. To try out this feature, contact your Square representative.\n!!!\n\n## Next steps\n\nImplement SCA in your application to start the SCA flow by reading the following topics:\n\n* For Web Payments SDK: [Add Strong Customer Authentication to a Card Payment](web-payments/sca)\n* For In-App Payments SDK: [Verify a Buyer](in-app-payments-sdk/verify-buyer)","programmingLanguage":"All","platform":"All"},{"type":"markdown","name":"sca-overview : how-it-works","markdown":"","programmingLanguage":"All","platform":"All"},{"type":"markdown","name":"sca-overview : walkthrough with text and images (non-walkthrough block)","markdown":"","programmingLanguage":"All","platform":"All"},{"type":"markdown","name":"sca-overview-iap : next step","markdown":"","programmingLanguage":"All","platform":"All"}]},"requirementsDomain":null},"navSet":{"value":{"items":[{"type":"link","url":"/","title":"Docs 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