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class="mw-indicators"> </div> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-namespace">Help</span><span class="mw-page-title-separator">:</span><span class="mw-page-title-main">Property constraints portal/Format</span></h1> <div id="bodyContent" class="vector-body"> <div id="siteSub" class="noprint">From Wikidata</div> <div id="contentSub"><div id="mw-content-subtitle"><div class="subpages">< <bdi dir="ltr"><a href="/wiki/Special:MyLanguage/Help:Property_constraints_portal" title="Special:MyLanguage/Help:Property constraints portal">Help:Property constraints portal</a></bdi></div></div></div> <div id="contentSub2"></div> <div id="jump-to-nav"></div> <a class="mw-jump-link" href="#mw-head">Jump to navigation</a> <a class="mw-jump-link" href="#searchInput">Jump to search</a> <div id="mw-content-text" class="mw-body-content"><div class="mw-pt-translate-header noprint nomobile" dir="ltr" lang="en"><a 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var(--border-color-content-removed,#fc3)}.mw-parser-output table.tmbox-move{border:2px solid #9932cc}.mw-parser-output table.tmbox-protection{border:1px solid #c0c090}.mw-parser-output table.fmbox{clear:both;margin:0.2em 0;width:100%;border:1px solid var(--border-color-base,#a2a9b1);background-color:var(--background-color-neutral-subtle,#f8f9fa);box-sizing:border-box}.mw-parser-output table.fmbox-system{background-color:var(--background-color-neutral-subtle,#f8f9fa)}.mw-parser-output table.fmbox-warning{border:1px solid #bb7070;background-color:#ffdbdb}.mw-parser-output table.fmbox-editnotice{background-color:transparent}html body.mediawiki .mw-parser-output .mbox-small{clear:right;float:right;margin:4px 0 4px 1em;box-sizing:border-box;width:238px;font-size:88%;line-height:1.25em}html body.mediawiki .mw-parser-output .mbox-small-left{margin:4px 1em 4px 0;box-sizing:border-box;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}</style><table class="plainlinks ombox ombox-notice" role="presentation" lang="en" dir="auto"><tbody><tr><td class="mbox-image"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Information_icon4.svg/40px-Information_icon4.svg.png" decoding="async" width="40" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Information_icon4.svg/60px-Information_icon4.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Information_icon4.svg/80px-Information_icon4.svg.png 2x" data-file-width="620" data-file-height="620"/></span></span></td><td class="mbox-text">This is the documentation page for a particular constraint type. See <a href="/wiki/Special:MyLanguage/Help:Property_constraints_portal" title="Special:MyLanguage/Help:Property constraints portal">Help:Property constraints portal</a> for a general overview of property constraints.</td></tr></tbody></table> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Pictogram_voting_regex.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/da/Pictogram_voting_regex.svg/220px-Pictogram_voting_regex.svg.png" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/da/Pictogram_voting_regex.svg/330px-Pictogram_voting_regex.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/da/Pictogram_voting_regex.svg/440px-Pictogram_voting_regex.svg.png 2x" data-file-width="249" data-file-height="249"/></a><figcaption></figcaption></figure> <p><a href="/wiki/Q21502404" title="Q21502404">format constraint <small>(Q21502404)</small></a> specifies that values for a property should conform to a certain pattern. </p><p>For example, the value for <a href="/wiki/Property:P590" title="Property:P590">GNIS Feature ID <small dir="ltr">(P590)</small></a> should always be a number with up to eight digits, without leading zeroes: <code>[1-9][0-9]{0,7}</code>. </p><p>The pattern is a <a href="https://en.wikipedia.org/wiki/Regular_expression" class="extiw" title="en:Regular expression">regular expression</a>, but the flavor varies: <a href="/wiki/User:KrBot" title="User:KrBot">KrBot</a>, which creates the <a href="/wiki/Wikidata:Database_reports/Constraint_violations" title="Wikidata:Database reports/Constraint violations">database reports</a>, uses <a href="https://en.wikipedia.org/wiki/Perl_Compatible_Regular_Expressions" class="extiw" title="en:Perl Compatible Regular Expressions">PCRE</a>; the <a href="https://www.mediawiki.org/wiki/Special:MyLanguage/Extension:WikibaseQualityConstraints" class="extiw" title="mw:Special:MyLanguage/Extension:WikibaseQualityConstraints">WikibaseQualityConstraints extension</a>, which powers the <a href="/wiki/File:Wikidata_property_constraint_violation.png" title="File:Wikidata property constraint violation.png">live constraint checks</a> and <a href="/wiki/Special:ConstraintReport" title="Special:ConstraintReport">Special:ConstraintReport</a>, uses PCRE since August 2021 (having previously used <a rel="nofollow" class="external text" href="https://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html">java.util.regex</a>); <a href="/wiki/Special:MyLanguage/Wikidata:Tools/OpenRefine" title="Special:MyLanguage/Wikidata:Tools/OpenRefine">OpenRefine</a> uses java.util.regex; other implementations may use something else to check regular expressions. The flavors are mostly, but not entirely compatible; for maximum compatibility with different constraint engines, it’s recommended to stick to the common subset of the flavors. </p><p>If no <a href="/wiki/Property:P4680" title="Property:P4680">constraint scope <small dir="ltr">(P4680)</small></a> is specified, this constraint is checked everywhere. </p> <div id="toc" class="toc" role="navigation" aria-labelledby="mw-toc-heading"><input type="checkbox" role="button" id="toctogglecheckbox" class="toctogglecheckbox" style="display:none" /><div class="toctitle" lang="en" dir="ltr"><h2 id="mw-toc-heading">Contents</h2><span class="toctogglespan"><label class="toctogglelabel" for="toctogglecheckbox"></label></span></div> <ul> <li class="toclevel-1 tocsection-1"><a href="#Possible_actions"><span class="tocnumber">1</span> <span class="toctext">Possible actions</span></a></li> <li class="toclevel-1 tocsection-2"><a href="#Parameters"><span class="tocnumber">2</span> <span class="toctext">Parameters</span></a></li> <li class="toclevel-1 tocsection-3"><a href="#Examples"><span class="tocnumber">3</span> <span class="toctext">Examples</span></a> <ul> <li class="toclevel-2 tocsection-4"><a href="#Example_1"><span class="tocnumber">3.1</span> <span class="toctext">Example 1</span></a></li> <li class="toclevel-2 tocsection-5"><a href="#Example_2"><span class="tocnumber">3.2</span> <span class="toctext">Example 2</span></a></li> </ul> </li> <li class="toclevel-1 tocsection-6"><a href="#Template"><span class="tocnumber">4</span> <span class="toctext">Template</span></a></li> <li class="toclevel-1 tocsection-7"><a href="#Lists"><span class="tocnumber">5</span> <span class="toctext">Lists</span></a></li> </ul> </div> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Possible_actions" data-mw-thread-id="h-Possible_actions"><span data-mw-comment-start="" id="h-Possible_actions"></span>Possible actions<span data-mw-comment-end="h-Possible_actions"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Help:Property_constraints_portal/Format&action=edit&section=1" title="Edit section: Possible actions"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>There are several possible ways to address a violation of this constraint: </p> <ul><li>The most likely case is that the value is malformed in some way. Often the fix is straightforward: add a missing prefix or remove one that should be implicit, add punctuation (e. g. add hyphens to an ISBN), fix capitalization, etc.</li> <li>It’s possible that the value is correct, but does not belong to this property, and that it should be moved to a statement for a different property (e. g. <a href="/wiki/Property:P212" title="Property:P212">ISBN-13 <small dir="ltr">(P212)</small></a> to <a href="/wiki/Property:P957" title="Property:P957">ISBN-10 <small dir="ltr">(P957)</small></a>).</li> <li>It’s possible that the identifier has expanded its range and the regex needs to be adapted (e.g. an identifier now uses up to 15 digits and not 10 as when it was first defined).</li> <li>It’s possible that the item is a rare, but legitimate exception to the constraint, and nothing should be done.</li></ul> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Parameters" data-mw-thread-id="h-Parameters"><span data-mw-comment-start="" id="h-Parameters"></span>Parameters<span data-mw-comment-end="h-Parameters"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Help:Property_constraints_portal/Format&action=edit&section=2" title="Edit section: Parameters"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>This constraint has one mandatory and one optional parameter: </p> <dl><dt><a href="/wiki/Property:P1793" title="Property:P1793">format as a regular expression <small dir="ltr">(P1793)</small></a></dt> <dd>Contains the format / pattern. Must contain exactly one value (<span style="background:transparent;color:#54595d;" title=""><i>no value</i></span> <small><a href="/wiki/Special:MyLanguage/Help:Statements#Unknown_or_no_values" title="Special:MyLanguage/Help:Statements">Help</a></small> or <span style="background:transparent;color:#54595d;" title=""><i>unknown value</i></span> <small><a href="/wiki/Special:MyLanguage/Help:Statements#Unknown_or_no_values" title="Special:MyLanguage/Help:Statements">Help</a></small> is not permitted), which must be a valid regular expression. Note that, at least for WikibaseQualityConstraints, the pattern should not be escaped (e.g. <code>/</code> should not be escaped as <code>\/</code>). The pattern is matched against the full value, so it’s generally not necessary to include <code>^</code> or <code>$</code> in the pattern: <code>\d+</code> and <code>^\d+$</code> both allow and disallow the same values, and the shorter form is preferred.</dd> <dt><a href="/wiki/Property:P2916" title="Property:P2916">syntax clarification <small dir="ltr">(P2916)</small></a></dt> <dd>Contains a human-readable description of the pattern. Can be specified several times in different languages.</dd></dl> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r2202362292"><table class="plainlinks ombox ombox-style" role="presentation"><tbody><tr><td class="mbox-image"><bdi lang="en"><span typeof="mw:File"><a href="/wiki/File:OOjs_UI_icon_notice-warning.svg" class="mw-file-description"><img alt="Warning" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/OOjs_UI_icon_notice-warning.svg/40px-OOjs_UI_icon_notice-warning.svg.png" decoding="async" width="40" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/OOjs_UI_icon_notice-warning.svg/60px-OOjs_UI_icon_notice-warning.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4c/OOjs_UI_icon_notice-warning.svg/80px-OOjs_UI_icon_notice-warning.svg.png 2x" data-file-width="20" data-file-height="20"/></a></span></bdi></td><td class="mbox-text"><bdi lang="en"><strong>Warning:</strong></bdi> <a href="/wiki/Property:P1793" title="Property:P1793">format as a regular expression <small dir="ltr">(P1793)</small></a> is also often used as a top-level statement of a property, but this usage does not constitute a constraint: to specify a format <i>constraint</i>, a <span class="statement"><span class="predicate"><a href="/wiki/Property:P2302" title="Property:P2302">property constraint <small>(P2302)</small></a></span><span class="object"><a href="/wiki/Q21502404" title="Q21502404">format constraint <small>(Q21502404)</small></a></span></span><style data-mw-deduplicate="TemplateStyles:r2202089130">.mw-parser-output .statement{margin:0 .2em;background:var(--background-color-base,#fff);color:var(--color-base,#202122);border:1px solid var(--border-color-subtle,#c8ccd1)}.mw-parser-output .statement .subject{padding:0 .2em}.mw-parser-output .statement .predicate{background:var(--background-color-neutral,#eaecf0);color:var(--color-emphasized,#000);padding:0 .2em}.mw-parser-output .statement .object{padding:0 .2em}</style> statement with <a href="/wiki/Property:P1793" title="Property:P1793">format as a regular expression <small dir="ltr">(P1793)</small></a> qualifier must be used.</td></tr></tbody></table> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Examples" data-mw-thread-id="h-Examples"><span data-mw-comment-start="" id="h-Examples"></span>Examples<span data-mw-comment-end="h-Examples"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Help:Property_constraints_portal/Format&action=edit&section=3" title="Edit section: Examples"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Example_1" data-mw-thread-id="h-Example_1-Examples"><span data-mw-comment-start="" id="h-Example_1-Examples"></span>Example 1<span data-mw-comment-end="h-Example_1-Examples"></span></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Help:Property_constraints_portal/Format&action=edit&section=4" title="Edit section: Example 1"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Values for <a href="/wiki/Property:P18" title="Property:P18">image <small dir="ltr">(P18)</small></a> should end with certain file extension like <code>.jpg</code> or <code>.png</code>. </p> <div class="statementplus" style="" dir="ltr"> <style data-mw-deduplicate="TemplateStyles:r2273692885">.mw-parser-output .statementplus{width:80%}.mw-parser-output .statementplus>table{width:100%;border:1px solid #c8ccd1;border:1px solid var(--border-color-subtle,#c8ccd1);border-collapse:collapse;border-spacing:0;background-color:white;background-color:var(--background-color-base,#fff)}.mw-parser-output .statementplus-showtables>table{border-color:black;border-width:2px}.mw-parser-output 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.statementplus-block[dir="ltr"]>tbody>tr>td{padding-left:.5em}.mw-parser-output .statementplus-block[dir="rtl"]>tbody>tr>td{padding-right:.5em}.mw-parser-output .statementplus-block>tbody>tr>td:first-child{width:12em}</style> <style data-mw-deduplicate="TemplateStyles:r2080812426">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}.mw-parser-output .infobox .navbar{font-size:100%}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Statement%2B" title="Template:Statement+"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Statement%2B" title="Template talk:Statement+"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a class="external text" href="https://www.wikidata.org/w/index.php?title=Template:Statement%2B&action=edit"><abbr title="Edit this template">e</abbr></a></li></ul></div> <table> <tbody><tr> <td class="statementplus-property" rowspan="2"><a href="/wiki/Property:P2302" title="Property:P2302">property constraint</a> </td> <td colspan="2"><table dir="ltr" class="statementplus-value"> <tbody><tr> <td class="statementplus-rank"><span typeof="mw:File"><span title="Normal rank"><img alt="Normal rank" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Normal_rank.svg/8px-Normal_rank.svg.png" decoding="async" width="8" height="20" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Normal_rank.svg/12px-Normal_rank.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Normal_rank.svg/16px-Normal_rank.svg.png 2x" data-file-width="8" data-file-height="20"/></span></span></td> <td class="statementplus-mainsnak"><a href="/wiki/Q21502404" title="Q21502404">format constraint</a></td> <td class="statementplus-editlink"><span>edit</span></td> </tr> <tr> <td></td> <td colspan="2"><table dir="ltr" class="statementplus-block"> <tbody><tr> <td><a href="/wiki/Property:P1793" title="Property:P1793">format as a regular expression</a></td> <td>(?i).+\.(jpg|jpeg|png|svg|tif|tiff|gif|xcf)</td> </tr></tbody></table></td> </tr> <tr> <td></td> <td colspan="2"> <div class="mw-collapsible mw-collapsed" id="mw-customcollapsible-299247"> <div class="statementplus-references-toggle mw-customtoggle-299247">0 references</div> <div class="mw-collapsible-content"><div class="statementplus-addreference">add reference</div> </div></div> </td> </tr> </tbody></table> </td></tr> <tr class="statementplus-addtoolbar"> <td> </td> <td class="statementplus-addtoolbar-tool">add value </td></tr></tbody></table></div> <div class="mw-heading mw-heading3"><h3 id="Example_2" data-mw-thread-id="h-Example_2-Examples"><span data-mw-comment-start="" id="h-Example_2-Examples"></span>Example 2<span data-mw-comment-end="h-Example_2-Examples"></span></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Help:Property_constraints_portal/Format&action=edit&section=5" title="Edit section: Example 2"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Using <a href="/wiki/Property:P2916" title="Property:P2916">syntax clarification <small dir="ltr">(P2916)</small></a> parameter for explaining the regular expression in human-readable text. For example, value of <a href="/wiki/Property:P898" title="Property:P898">IPA transcription <small dir="ltr">(P898)</small></a> doesn't contain : (<a href="https://en.wikipedia.org/wiki/Colon_(punctuation)" class="extiw" title="w:Colon (punctuation)">colon</a>) or ' (<a href="https://en.wikipedia.org/wiki/Apostrophe" class="extiw" title="w:Apostrophe">apostrophe</a>). Correct character is ː (<a href="https://en.wikipedia.org/wiki/Length_(phonetics)" class="extiw" title="w:Length (phonetics)">length</a>) or ˈ (<a href="https://en.wikipedia.org/wiki/Stress_(linguistics)" class="extiw" title="w:Stress (linguistics)">stress</a>). This regular expression is difficult to understand without explanation. </p> <div class="statementplus" style="" dir="ltr"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r2273692885"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r2080812426"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Statement%2B" title="Template:Statement+"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Statement%2B" title="Template talk:Statement+"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a class="external text" href="https://www.wikidata.org/w/index.php?title=Template:Statement%2B&action=edit"><abbr title="Edit this template">e</abbr></a></li></ul></div> <table> <tbody><tr> <td class="statementplus-property" rowspan="2"><a href="/wiki/Property:P2302" title="Property:P2302">property constraint</a> </td> <td colspan="2"><table dir="ltr" class="statementplus-value"> <tbody><tr> <td class="statementplus-rank"><span typeof="mw:File"><span title="Normal rank"><img alt="Normal rank" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Normal_rank.svg/8px-Normal_rank.svg.png" decoding="async" width="8" height="20" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Normal_rank.svg/12px-Normal_rank.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Normal_rank.svg/16px-Normal_rank.svg.png 2x" data-file-width="8" data-file-height="20"/></span></span></td> <td class="statementplus-mainsnak"><a href="/wiki/Q21502404" title="Q21502404">format constraint</a></td> <td class="statementplus-editlink"><span>edit</span></td> </tr> <tr> <td></td> <td colspan="2"><table dir="ltr" class="statementplus-block"> <tbody><tr> <td><a href="/wiki/Property:P1793" title="Property:P1793">format as a regular expression</a></td> <td>[^:]+</td> </tr></tbody></table><table dir="ltr" class="statementplus-block"> <tbody><tr> <td><a href="/wiki/Property:P2916" title="Property:P2916">syntax clarification</a></td> <td>colon is not a valid IPA character, the correct character for a length mark is ː (English)</td> </tr></tbody></table></td> </tr> <tr> <td></td> <td colspan="2"> <div class="mw-collapsible mw-collapsed" id="mw-customcollapsible-970101"> <div class="statementplus-references-toggle mw-customtoggle-970101">0 references</div> <div class="mw-collapsible-content"><div class="statementplus-addreference">add reference</div> </div></div> </td> </tr> </tbody></table><table dir="ltr" class="statementplus-value"> <tbody><tr> <td class="statementplus-rank"><span typeof="mw:File"><span title="Normal rank"><img alt="Normal rank" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Normal_rank.svg/8px-Normal_rank.svg.png" decoding="async" width="8" height="20" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Normal_rank.svg/12px-Normal_rank.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Normal_rank.svg/16px-Normal_rank.svg.png 2x" data-file-width="8" data-file-height="20"/></span></span></td> <td class="statementplus-mainsnak"><a href="/wiki/Q21502404" title="Q21502404">format constraint</a></td> <td class="statementplus-editlink"><span>edit</span></td> </tr> <tr> <td></td> <td colspan="2"><table dir="ltr" class="statementplus-block"> <tbody><tr> <td><a href="/wiki/Property:P1793" title="Property:P1793">format as a regular expression</a></td> <td>[^']+</td> </tr></tbody></table><table dir="ltr" class="statementplus-block"> <tbody><tr> <td><a href="/wiki/Property:P2916" title="Property:P2916">syntax clarification</a></td> <td>apostrophe is not a valid IPA character, the correct character for primary stress is ˈ (English)</td> </tr></tbody></table></td> </tr> <tr> <td></td> <td colspan="2"> <div class="mw-collapsible mw-collapsed" id="mw-customcollapsible-942902"> <div class="statementplus-references-toggle mw-customtoggle-942902">0 references</div> <div class="mw-collapsible-content"><div class="statementplus-addreference">add reference</div> </div></div> </td> </tr> </tbody></table> </td></tr> <tr class="statementplus-addtoolbar"> <td> </td> <td class="statementplus-addtoolbar-tool">add value </td></tr></tbody></table></div> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Template" data-mw-thread-id="h-Template"><span data-mw-comment-start="" id="h-Template"></span>Template<span data-mw-comment-end="h-Template"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Help:Property_constraints_portal/Format&action=edit&section=6" title="Edit section: Template"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>When the constraint is set to the property, the following template is automatically displayed in the property talk page. The template is created by <a href="/wiki/Module:Constraints" title="Module:Constraints">Module:Constraints</a> using <a href="/wiki/Template:Constraint" title="Template:Constraint">Template:Constraint</a>, invoked from <a href="/wiki/Template:Property_documentation" title="Template:Property documentation">Template:Property documentation</a>. Translations are defined at <a href="/wiki/Module:I18n/constraints" title="Module:I18n/constraints">Module:i18n/constraints</a>. </p> <div class="constraint" lang="en" dir="ltr"> <style data-mw-deduplicate="TemplateStyles:r2262252589">.mw-parser-output .constraint{display:flex;background:var(--background-color-base,#fff);border:2px solid var(--border-color-subtle,#c8ccd1);padding:3px;column-gap:2px;align-items:center}.mw-parser-output .constraint.mandatory{background:var(--background-color-success-subtle,#dff2eb)}.mw-parser-output .constraint.ltr{direction:ltr}.mw-parser-output .constraint.rtl{direction:rtl}.mw-parser-output .constraint>div{margin:2px}.mw-parser-output .constraint-icon{padding:0 .5em 0 .3em;flex-shrink:0}.mw-parser-output .constraint code{white-space:pre-wrap;word-break:break-all}</style> <div class="constraint-icon"><span typeof="mw:File"><a href="/wiki/Special:MyLanguage/Help:Property_constraints_portal/Format" title="Special:MyLanguage/Help:Property constraints portal/Format"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/da/Pictogram_voting_regex.svg/40px-Pictogram_voting_regex.svg.png" decoding="async" width="40" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/da/Pictogram_voting_regex.svg/60px-Pictogram_voting_regex.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/da/Pictogram_voting_regex.svg/80px-Pictogram_voting_regex.svg.png 2x" data-file-width="249" data-file-height="249"/></a></span></div> <div><div lang="" dir="auto"><b>Format “<code>(?i).+\.(jpg|jpeg|jpe|png|svg|tif|tiff|gif|xcf|pdf|djvu|webp)|</code>”</b>: value must be formatted using this pattern (<a href="https://en.wikipedia.org/wiki/Perl_Compatible_Regular_Expressions" class="extiw" title="en:Perl Compatible Regular Expressions">PCRE syntax</a>). (<a href="/wiki/Special:MyLanguage/Help:Property_constraints_portal/Format" title="Special:MyLanguage/Help:Property constraints portal/Format">Help</a>)</div><small>Exceptions are possible as rare values may exist. <a href="/wiki/Special:MyLanguage/Help:Property_constraints_portal#Constraint_parameters" title="Special:MyLanguage/Help:Property constraints portal">Exceptions can be specified</a> using <a href="/wiki/Property:P2303" title="Property:P2303">exception to constraint <small dir="ltr">(P2303)</small></a>. </small><br/> <small>List of violations of this constraint: <bdi lang="en"><a href="/wiki/Wikidata:Database_reports/Constraint_violations/P18#Format" title="Wikidata:Database reports/Constraint violations/P18">Database reports/Constraint violations/P18#Format</a></bdi>, <a class="external text" href="https://query.wikidata.org/#SELECT%20%3Fitem%20%3FitemLabel%20%3Fvalue%20%3Fresult%20%28STRLEN%28STR%28%3Fvalue%29%29%20AS%20%3Fstringlength%29%20%20%3Fsnak%20%3Frank%0AWHERE%0A%7B%0A%09%7B%0A%09%09SELECT%20%3Fitem%20%3Fvalue%20%3Fresult%20%3Fsnak%20%3Frank%0A%09%09WHERE%0A%09%09%7B%0A%09%09%09%7B%0A%09%09%09%09%3Fitem%20p%3AP18%20%5B%20ps%3AP18%20%3Fvalue%3B%20wikibase%3Arank%20%3Frank%20%5D%20.%0A%09%09%09%09BIND%28%22mainsnak%22%20AS%20%3Fsnak%29%20.%0A%09%09%09%7D%20UNION%20%7B%0A%09%09%09%09%3Fstatement1%20pq%3AP18%20%3Fvalue%3B%0A%09%09%09%09%09wikibase%3Arank%20%3Frank%20.%0A%09%09%09%09%3Fitem%20%3Fp1%20%3Fstatement1%20.%0A%09%09%09%09BIND%28%22qualifier%22%20AS%20%3Fsnak%29%20.%0A%09%09%09%7D%20UNION%20%7B%0A%09%09%09%09%3Fref%20pr%3AP18%20%3Fvalue%20.%0A%09%09%09%09%3Fstatement2%20prov%3AwasDerivedFrom%20%3Fref%3B%0A%09%09%09%09%09wikibase%3Arank%20%3Frank%20.%0A%09%09%09%09%3Fitem%20%3Fp2%20%3Fstatement2%20.%0A%09%09%09%09BIND%28%22reference%22%20AS%20%3Fsnak%29%20.%0A%09%09%09%7D%20.%0A%09%09%09BIND%28%20REGEX%28%20STR%28%20%3Fvalue%20%29%2C%20%22%5E%28%28%3Fi%29.%2B%5C%5C.%28jpg%7Cjpeg%7Cjpe%7Cpng%7Csvg%7Ctif%7Ctiff%7Cgif%7Cxcf%7Cpdf%7Cdjvu%7Cwebp%29%7C%29%24%22%20%29%20AS%20%3Fregexresult%20%29%20.%0A%09%09%09FILTER%28%20%3Fregexresult%20%3D%20false%20%29%20.%0A%09%09%09BIND%28%20IF%28%20%3Fregexresult%20%3D%20true%2C%20%22pass%22%2C%20%22fail%22%20%29%20AS%20%3Fresult%20%29%20.%0A%09%09%09FILTER%28%20%3Fitem%20NOT%20IN%20%28%20wd%3AQ4115189%2C%20wd%3AQ13406268%2C%20wd%3AQ15397819%20%29%20%29%20.%0A%09%09%7D%20%0A%09%09LIMIT%20100%0A%09%7D%20.%0A%09SERVICE%20wikibase%3Alabel%20%7B%20bd%3AserviceParam%20wikibase%3Alanguage%20%22en%22%20%7D%20.%0A%7D%0A%23ORDER%20BY%20%3Frank%20%3Fsnak%20%3Fvalue%0A%23PLEASE%20NOTE%3A%20This%20is%20experimental%20and%20may%20only%20work%20for%20simple%20patterns.%0A%23Tests%20may%20fail%20due%20to%3A%0A%23%281%29%20differences%20in%20regex%20format%20between%20SPARQL%20%28https%3A%2F%2Fwww.w3.org%2FTR%2Fxpath-functions%2F%23regex-syntax%29%20and%20PCRE%20%28used%20by%20constraint%20reports%29.%20Don%27t%20change%20the%20regex%20to%20work%20with%20SPARQL%21%0A%23%282%29%20some%20bug%20in%20the%20link%20that%20brought%20you%20here%0A%23Known%20to%20fail%3A%20P227%20%28multiple%20curly%20braces%29%2C%20P274%2C%20P281">SPARQL</a></small></div> </div> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Lists" data-mw-thread-id="h-Lists"><span data-mw-comment-start="" id="h-Lists"></span>Lists<span data-mw-comment-end="h-Lists"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Help:Property_constraints_portal/Format&action=edit&section=7" title="Edit section: Lists"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Lists of properties which are set format constraint. </p> <ul><li><a href="/wiki/Category:Properties_with_format_constraints" title="Category:Properties with format constraints">Category:Properties with format constraints</a></li> <li><a class="external text" href="https://query.wikidata.org/#SELECT%20%3FProperty_%20%3FProperty_Label%20%3FProperty_Description%20%3Fformat_as_a_regular_expression%20%20%3Fsyntax_clarification%20%0AWHERE%20%7B%0A%20%20%0A%09%3FProperty_%20p%3AP2302%20%3Fconstraint_statement%20.%0A%09%3Fconstraint_statement%20ps%3AP2302%20wd%3AQ21502404%20.%0A%09OPTIONAL%20%7B%3Fconstraint_statement%20pq%3AP1793%20%3Fformat_as_a_regular_expression%20.%7D%0A%09OPTIONAL%20%7B%3Fconstraint_statement%20pq%3AP2916%20%3Fsyntax_clarification%20.%7D%0A%0A%09SERVICE%20wikibase%3Alabel%20%7B%20bd%3AserviceParam%20wikibase%3Alanguage%20%22%5BAUTO_LANGUAGE%5D%2Cen%22.%20%7D%0A%0A%7D%20">SPARQL query</a> - click the execute button <span typeof="mw:File"><span><img alt="Execute button" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Execute_button.svg/12px-Execute_button.svg.png" decoding="async" width="12" height="11" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Execute_button.svg/18px-Execute_button.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Execute_button.svg/24px-Execute_button.svg.png 2x" data-file-width="80" data-file-height="74"/></span></span> at the linked page to see the query result.</li></ul> <table class="navbox" dir="ltr" style="border-spacing:0;background: #CDDDDD; width: 100%; vertical-align: middle;;font: arial;"><tbody><tr><td style="padding:2px"><style data-mw-deduplicate="TemplateStyles:r2241526210">.mw-parser-output .navbox{border:1px solid var(--border-color-base,#a2a9b1);width:100%;margin:auto;clear:both;font-size:88%;text-align:center;padding:1px}.mw-parser-output .navbox-inner,.mw-parser-output .navbox-subgroup{width:100%}.mw-parser-output .navbox-group,.mw-parser-output .navbox-title,.mw-parser-output .navbox-abovebelow{padding:0.25em 1em;line-height:1.5em;text-align:center}.mw-parser-output th.navbox-group{white-space:nowrap;text-align:right}.mw-parser-output .navbox,.mw-parser-output .navbox-subgroup{background:#fdfdfd}.mw-parser-output .navbox-list{line-height:1.8em;border-color:#fdfdfd}.mw-parser-output .navbox th,.mw-parser-output .navbox-title{background:#ccccff}.mw-parser-output .navbox-abovebelow,.mw-parser-output th.navbox-group,.mw-parser-output .navbox-subgroup .navbox-title{background:#ddddff}.mw-parser-output .navbox-subgroup .navbox-group,.mw-parser-output .navbox-subgroup .navbox-abovebelow{background:#e6e6ff}.mw-parser-output .navbox-even{background:#f7f7f7}.mw-parser-output .navbox-odd{background:transparent}.mw-parser-output table.navbox+table.navbox{margin-top:-1px}.mw-parser-output .navbox .hlist td dl,.mw-parser-output .navbox .hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output ol+table.navbox,.mw-parser-output ul+table.navbox{margin-top:0.5em}</style><table class="nowraplinks navbox-inner" dir="ltr" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2" style="background: #CDDDDD; padding-left: 1em; padding-right: 1em; text-align: center; font-size: x-small;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r2080812426"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Property_constraints" title="Template:Property constraints"><abbr title="View this template" style=";background: #CDDDDD; padding-left: 1em; padding-right: 1em; text-align: center; font-size: x-small;;background:none transparent;color:inherit;border:none;">v</abbr></a></li><li class="nv-talk"><a href="/w/index.php?title=Template_talk:Property_constraints&action=edit&redlink=1" class="new" title="Template talk:Property constraints (page does not exist)"><abbr title="Discuss this template" style=";background: #CDDDDD; padding-left: 1em; padding-right: 1em; text-align: center; font-size: x-small;;background:none transparent;color:inherit;border:none;">t</abbr></a></li><li class="nv-edit"><a class="external text" href="https://www.wikidata.org/w/index.php?title=Template:Property_constraints&action=edit"><abbr title="Edit this template" style=";background: #CDDDDD; padding-left: 1em; padding-right: 1em; text-align: center; font-size: x-small;;background:none transparent;color:inherit;border:none;">e</abbr></a></li></ul></div><span style="float:right;width:6em"> </span><div style="font-size:110%"><a href="/wiki/Help:Property_constraints_portal" title="Help:Property constraints portal">Help:Property constraints portal</a></div></th></tr><tr style="height:2px"><td colspan="2"></td></tr><tr><th scope="row" class="navbox-group" style="background: #CDDDDD; padding-left: 1em; padding-right: 1em; text-align: right; font-size: 11px;">Popular</th><td class="navbox-list navbox-odd hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px;background: #EFFFFF; text-align: left/center; font-size: 12px;"><div style="padding:0em 0.25em"> <ul><li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/75/Pictogram_voting_number_one.svg/14px-Pictogram_voting_number_one.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/75/Pictogram_voting_number_one.svg/21px-Pictogram_voting_number_one.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/75/Pictogram_voting_number_one.svg/28px-Pictogram_voting_number_one.svg.png 2x" data-file-width="249" data-file-height="249"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Single_value" title="Help:Property constraints portal/Single value">single-value constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Pictogram_voting_not_equal.svg/14px-Pictogram_voting_not_equal.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Pictogram_voting_not_equal.svg/21px-Pictogram_voting_not_equal.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Pictogram_voting_not_equal.svg/28px-Pictogram_voting_not_equal.svg.png 2x" data-file-width="249" data-file-height="249"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Unique_value" title="Help:Property constraints portal/Unique value">distinct-values constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/da/Pictogram_voting_regex.svg/14px-Pictogram_voting_regex.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/da/Pictogram_voting_regex.svg/21px-Pictogram_voting_regex.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/da/Pictogram_voting_regex.svg/28px-Pictogram_voting_regex.svg.png 2x" data-file-width="249" data-file-height="249"/></span></span> <a class="mw-selflink selflink">format constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Pictogram_voting_cluster.svg/14px-Pictogram_voting_cluster.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Pictogram_voting_cluster.svg/21px-Pictogram_voting_cluster.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/83/Pictogram_voting_cluster.svg/28px-Pictogram_voting_cluster.svg.png 2x" data-file-width="250" data-file-height="250"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Subject_class" title="Help:Property constraints portal/Subject class">subject type constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d0/Pictogram_voting_arrow.svg/14px-Pictogram_voting_arrow.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d0/Pictogram_voting_arrow.svg/21px-Pictogram_voting_arrow.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d0/Pictogram_voting_arrow.svg/28px-Pictogram_voting_arrow.svg.png 2x" data-file-width="249" data-file-height="249"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Value_class" title="Help:Property constraints portal/Value class">value-type constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/be/Pictogram_reply_soft_green.svg/14px-Pictogram_reply_soft_green.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/be/Pictogram_reply_soft_green.svg/21px-Pictogram_reply_soft_green.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/be/Pictogram_reply_soft_green.svg/28px-Pictogram_reply_soft_green.svg.png 2x" data-file-width="180" data-file-height="185"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Property_Scope_Constraint" title="Help:Property constraints portal/Property Scope Constraint">property scope constraint</a></li></ul> </div></td></tr><tr style="height:2px"><td colspan="2"></td></tr><tr><th scope="row" class="navbox-group" style="background: #CDDDDD; padding-left: 1em; padding-right: 1em; text-align: right; font-size: 11px;">Others</th><td class="navbox-list navbox-even hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px;background: #EFFFFF; text-align: left/center; font-size: 12px;"><div style="padding:0em 0.25em"> <ul><li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/df/Pictogram_voting_two_plus.svg/14px-Pictogram_voting_two_plus.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/df/Pictogram_voting_two_plus.svg/21px-Pictogram_voting_two_plus.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/df/Pictogram_voting_two_plus.svg/28px-Pictogram_voting_two_plus.svg.png 2x" data-file-width="249" data-file-height="249"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Multi_value" title="Help:Property constraints portal/Multi value">multi-value constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/86/Pictogram_voting_commons_logo.svg/14px-Pictogram_voting_commons_logo.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/86/Pictogram_voting_commons_logo.svg/21px-Pictogram_voting_commons_logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/86/Pictogram_voting_commons_logo.svg/28px-Pictogram_voting_commons_logo.svg.png 2x" data-file-width="249" data-file-height="249"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Commons_link" title="Help:Property constraints portal/Commons link">Commons link constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/be/Pictogram_reply_soft_green.svg/14px-Pictogram_reply_soft_green.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/be/Pictogram_reply_soft_green.svg/21px-Pictogram_reply_soft_green.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/be/Pictogram_reply_soft_green.svg/28px-Pictogram_reply_soft_green.svg.png 2x" data-file-width="180" data-file-height="185"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Qualifiers" title="Help:Property constraints portal/Qualifiers">allowed qualifiers constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b8/Pictogram_voting_unit.svg/14px-Pictogram_voting_unit.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b8/Pictogram_voting_unit.svg/21px-Pictogram_voting_unit.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b8/Pictogram_voting_unit.svg/28px-Pictogram_voting_unit.svg.png 2x" data-file-width="249" data-file-height="249"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Units" title="Help:Property constraints portal/Units">allowed units constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Pictogram_voting_x.svg/14px-Pictogram_voting_x.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Pictogram_voting_x.svg/21px-Pictogram_voting_x.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Pictogram_voting_x.svg/28px-Pictogram_voting_x.svg.png 2x" data-file-width="250" data-file-height="250"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Conflicts_with" title="Help:Property constraints portal/Conflicts with">conflicts-with constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Pictogram_voting_list.svg/14px-Pictogram_voting_list.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Pictogram_voting_list.svg/21px-Pictogram_voting_list.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Pictogram_voting_list.svg/28px-Pictogram_voting_list.svg.png 2x" data-file-width="249" data-file-height="249"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Diff_within_range" title="Help:Property constraints portal/Diff within range">difference-within-range constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0d/Pictogram_voting_two_arrows_to_the_center.svg/14px-Pictogram_voting_two_arrows_to_the_center.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0d/Pictogram_voting_two_arrows_to_the_center.svg/21px-Pictogram_voting_two_arrows_to_the_center.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0d/Pictogram_voting_two_arrows_to_the_center.svg/28px-Pictogram_voting_two_arrows_to_the_center.svg.png 2x" data-file-width="250" data-file-height="250"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Inverse" title="Help:Property constraints portal/Inverse">inverse constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Pictogram_voting_cluster.svg/14px-Pictogram_voting_cluster.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Pictogram_voting_cluster.svg/21px-Pictogram_voting_cluster.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/83/Pictogram_voting_cluster.svg/28px-Pictogram_voting_cluster.svg.png 2x" data-file-width="250" data-file-height="250"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Item" title="Help:Property constraints portal/Item">item-requires-statement constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/be/Pictogram_reply_soft_green.svg/14px-Pictogram_reply_soft_green.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/be/Pictogram_reply_soft_green.svg/21px-Pictogram_reply_soft_green.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/be/Pictogram_reply_soft_green.svg/28px-Pictogram_reply_soft_green.svg.png 2x" data-file-width="180" data-file-height="185"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Required_qualifiers" title="Help:Property constraints portal/Required qualifiers">required qualifier constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Pictogram_voting_list.svg/14px-Pictogram_voting_list.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Pictogram_voting_list.svg/21px-Pictogram_voting_list.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Pictogram_voting_list.svg/28px-Pictogram_voting_list.svg.png 2x" data-file-width="249" data-file-height="249"/></span></span> <a href="/wiki/Help:Property_constraints_portal/One_of" title="Help:Property constraints portal/One of">one-of constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Pictogram_voting_list.svg/14px-Pictogram_voting_list.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Pictogram_voting_list.svg/21px-Pictogram_voting_list.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Pictogram_voting_list.svg/28px-Pictogram_voting_list.svg.png 2x" data-file-width="249" data-file-height="249"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Range" title="Help:Property constraints portal/Range">range constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/74/Pictogram_voting_left_right_arrow.svg/14px-Pictogram_voting_left_right_arrow.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/74/Pictogram_voting_left_right_arrow.svg/21px-Pictogram_voting_left_right_arrow.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/74/Pictogram_voting_left_right_arrow.svg/28px-Pictogram_voting_left_right_arrow.svg.png 2x" data-file-width="249" data-file-height="249"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Symmetric" title="Help:Property constraints portal/Symmetric">symmetric constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d0/Pictogram_voting_arrow.svg/14px-Pictogram_voting_arrow.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d0/Pictogram_voting_arrow.svg/21px-Pictogram_voting_arrow.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d0/Pictogram_voting_arrow.svg/28px-Pictogram_voting_arrow.svg.png 2x" data-file-width="249" data-file-height="249"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Target_required_claim" title="Help:Property constraints portal/Target required claim">value-requires-statement constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c9/Pictogram_plusminus.svg/14px-Pictogram_plusminus.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c9/Pictogram_plusminus.svg/21px-Pictogram_plusminus.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c9/Pictogram_plusminus.svg/28px-Pictogram_plusminus.svg.png 2x" data-file-width="249" data-file-height="249"/></span></span> <a href="/wiki/Help:Property_constraints_portal/No_bounds" title="Help:Property constraints portal/No bounds">no-bounds constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/75/Pictogram_voting_number_one.svg/14px-Pictogram_voting_number_one.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/75/Pictogram_voting_number_one.svg/21px-Pictogram_voting_number_one.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/75/Pictogram_voting_number_one.svg/28px-Pictogram_voting_number_one.svg.png 2x" data-file-width="249" data-file-height="249"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Integer" title="Help:Property constraints portal/Integer">integer constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Pictogram_voting_x.svg/14px-Pictogram_voting_x.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Pictogram_voting_x.svg/21px-Pictogram_voting_x.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Pictogram_voting_x.svg/28px-Pictogram_voting_x.svg.png 2x" data-file-width="250" data-file-height="250"/></span></span> <a href="/wiki/Help:Property_constraints_portal/None_of" title="Help:Property constraints portal/None of">none-of constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/75/Pictogram_voting_number_one.svg/14px-Pictogram_voting_number_one.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/75/Pictogram_voting_number_one.svg/21px-Pictogram_voting_number_one.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/75/Pictogram_voting_number_one.svg/28px-Pictogram_voting_number_one.svg.png 2x" data-file-width="249" data-file-height="249"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Single_best_value" title="Help:Property constraints portal/Single best value">single-best-value constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Propozycja_LnM.svg/14px-Propozycja_LnM.svg.png" decoding="async" width="14" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Propozycja_LnM.svg/21px-Propozycja_LnM.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Propozycja_LnM.svg/28px-Propozycja_LnM.svg.png 2x" data-file-width="586" data-file-height="655"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Citation_needed" title="Help:Property constraints portal/Citation needed">citation-needed constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/94/Wikidata-HS-icon.svg/14px-Wikidata-HS-icon.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/94/Wikidata-HS-icon.svg/21px-Wikidata-HS-icon.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/94/Wikidata-HS-icon.svg/28px-Wikidata-HS-icon.svg.png 2x" data-file-width="156" data-file-height="156"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Allowed_entity_types" title="Help:Property constraints portal/Allowed entity types">allowed-entity-types constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a1/Hourglass_icon.svg/14px-Hourglass_icon.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a1/Hourglass_icon.svg/21px-Hourglass_icon.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a1/Hourglass_icon.svg/28px-Hourglass_icon.svg.png 2x" data-file-width="249" data-file-height="249"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Contemporary" title="Help:Property constraints portal/Contemporary">contemporary constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Pictogram_voting_list.svg/14px-Pictogram_voting_list.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Pictogram_voting_list.svg/21px-Pictogram_voting_list.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Pictogram_voting_list.svg/28px-Pictogram_voting_list.svg.png 2x" data-file-width="249" data-file-height="249"/></span></span> <a href="/wiki/Q55819078" title="Q55819078">lexeme requires lexical category constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/55/Pictogram_voting_info_ku.svg/14px-Pictogram_voting_info_ku.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/55/Pictogram_voting_info_ku.svg/21px-Pictogram_voting_info_ku.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/55/Pictogram_voting_info_ku.svg/28px-Pictogram_voting_info_ku.svg.png 2x" data-file-width="250" data-file-height="250"/></span></span> <a href="/wiki/Help:Property_constraints_portal/Lexeme_language" title="Help:Property constraints portal/Lexeme language">lexeme requires language constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d0/Pictogram_voting_arrow.svg/14px-Pictogram_voting_arrow.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d0/Pictogram_voting_arrow.svg/21px-Pictogram_voting_arrow.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d0/Pictogram_voting_arrow.svg/28px-Pictogram_voting_arrow.svg.png 2x" data-file-width="249" data-file-height="249"/></span></span> <a href="/wiki/Q64006792" title="Q64006792">lexeme-value-requires-lexical-category constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Symbol_Translate.svg/14px-Symbol_Translate.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Symbol_Translate.svg/21px-Symbol_Translate.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Symbol_Translate.svg/28px-Symbol_Translate.svg.png 2x" data-file-width="180" data-file-height="185"/></span></span> <a href="/wiki/Q108139345" title="Q108139345">label in language constraint</a></li> <li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Symbol_Translate.svg/14px-Symbol_Translate.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Symbol_Translate.svg/21px-Symbol_Translate.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Symbol_Translate.svg/28px-Symbol_Translate.svg.png 2x" data-file-width="180" data-file-height="185"/></span></span> <a href="/wiki/Q111204896" title="Q111204896">description in language constraint</a></li></ul> </div></td></tr><tr style="height:2px"><td colspan="2"></td></tr><tr><th scope="row" class="navbox-group" style="background: #CDDDDD; padding-left: 1em; padding-right: 1em; text-align: right; font-size: 11px;"><a href="/wiki/Wikidata:Database_reports/Constraint_violations" title="Wikidata:Database reports/Constraint violations">Constraint violation</a></th><td class="navbox-list navbox-odd hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px;background: #EFFFFF; text-align: left/center; font-size: 12px;"><div style="padding:0em 0.25em"><a href="/wiki/Category:Constraint_violation_reports" title="Category:Constraint violation reports">Category:Constraint violation reports</a> (<a href="/wiki/Wikidata:Database_reports/Constraint_violations/Summary" title="Wikidata:Database reports/Constraint violations/Summary">Summary</a>)</div></td></tr><tr style="height:2px"><td colspan="2"></td></tr><tr><th scope="row" class="navbox-group" style="background: #CDDDDD; padding-left: 1em; padding-right: 1em; text-align: right; font-size: 11px;"><a href="/wiki/Template:Complex_constraint" title="Template:Complex constraint">Complex constraints</a></th><td class="navbox-list navbox-even hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px;background: #EFFFFF; text-align: left/center; font-size: 12px;"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/Category:Complex_constraint_violation_reports" title="Category:Complex constraint violation reports">Category:Complex constraint violation reports</a> (<a href="/wiki/Wikidata:Database_reports/Complex_constraints" title="Wikidata:Database reports/Complex constraints">Overview</a>)</li> <li><a href="/wiki/Help:Property_constraints_portal/Value_label" title="Help:Property constraints portal/Value label">complex constraint value label</a></li> <li><a href="/wiki/Help:Property_constraints_portal/Recency" title="Help:Property constraints portal/Recency">complex constraint recency</a></li> <li><a href="/wiki/Help:Property_constraints_portal/Label_language" title="Help:Property constraints portal/Label language">complex constraint label language</a></li> <li><a href="/wiki/Help:Property_constraints_portal/Value_label_template" title="Help:Property constraints portal/Value label template">complex constraint value label template</a></li></ul> </div></td></tr><tr style="height:2px"><td colspan="2"></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div>See also: <a href="/wiki/Wikidata:WikiProject_property_constraints" title="Wikidata:WikiProject property constraints">Wikidata:WikiProject property constraints</a> - <a href="/wiki/Wikidata:WikiProject_Properties" title="Wikidata:WikiProject Properties">Wikidata:WikiProject Properties</a> - <a href="/wiki/Wikidata:WikiProject_Ontology" title="Wikidata:WikiProject Ontology">Wikidata:WikiProject Ontology</a> - <a href="/wiki/Wikidata:WikiProject_Counter-Vandalism" title="Wikidata:WikiProject Counter-Vandalism">Wikidata:WikiProject Counter-Vandalism</a></div></td></tr></tbody></table></td></tr></tbody></table>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" 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