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href="https://www.issn.org/understanding-the-issn/assignment-rules/">Assignment rules and standards</a>ISSN, the major principles </div> <article> <header> <h1>ISSN, the major principles</h1> </header> <div class="entry"> <div class="article-extra"> <p class="article-imprimer"><a onClick="window.print()" value="Imprimer cette page" href="#" class="tooltip2"> <span><img class="callout" src="https://www.issn.org/wp-content/themes/themeissn/img/fleche-tootip.png" />Print</span></a></p> <p class="article-telecharger"><a class="tooltip2" href="https://www.issn.org/wp-content/plugins/post2pdf-converter/post2pdf-converter-pdf-maker.php?id=1261"> <span><img class="callout" src="https://www.issn.org/wp-content/themes/themeissn/img/fleche-tootip.png" />Download</span></a></p> <p id="partager" class="article-partager"><a href="#" class="tooltip2"> <span><img class="callout" src="https://www.issn.org/wp-content/themes/themeissn/img/fleche-tootip.png" />Share</span></a></p> <p class="article-envoyer"><a href="mailto:?body=https://www.issn.org/understanding-the-issn/assignment-rules/issn-the-major-principles/" class="tooltip2"> <span><img class="callout" src="https://www.issn.org/wp-content/themes/themeissn/img/fleche-tootip.png" />Send to a friend</span></a></p> <div id="reseau"> <ul> <li><a href="http://www.facebook.com/share.php?u=https://www.issn.org/understanding-the-issn/assignment-rules/issn-the-major-principles/">facebook</a></li> <li><a href="http://twitter.com/home/?status=https://www.issn.org/understanding-the-issn/assignment-rules/issn-the-major-principles/">twitter</a></li> </ul> </div> </div> <p class="chapo">An ISSN, for which media? When, how and in which case should you apply for an ISSN? Here is what you should know before applying for an ISSN for your publication.</p> <ul> <li>ISSN, the basic rule</li> <li>Applying for an ISSN</li> <li>Applying for multiple ISSN</li> <li>Changing ISSN</li> <li>Special cases</li> </ul> <h2>ISSN, the basic rule</h2> <p>The ISSN identifies the publication as such, in reference to its title and its medium.<br /> As such, you will always have the same ISSN for all:</p> <ul> <li>issues of a periodical,</li> <li>issues of a magazine,</li> <li>CD-Roms in a series, etc.</li> </ul> <h2>Applying for an ISSN</h2> <p>The <a title="The ISSN Network today" href="https://www.issn.org/the-centre-and-the-network/members-countries/the-issn-network-today/?lang=en">ISSN National Centres</a> assign ISSN to the publications issued by the publishers located in their own countries.</p> <p>If a country does not have an ISSN National Centre, the <a href="https://www.issn.org/services/requesting-an-issn/contact-the-issn-international-centre/">ISSN International Centre</a> assigns the ISSN.</p> <p>The publisher is asked to attach certain information and supporting documents to its application (<a title="Your ISSN, guidelines" href="https://portal.issn.org/sites/default/files/guidelinespublishers_merged-eng-final.pdf">see details</a>).</p> <p>An application for an ISSN can be submitted <strong>up to 3 months before a publication is released</strong>, if the information and documents provided demonstrate that the project is sufficiently advanced. Please note that the assigned ISSN is only duly registered in the <a title="The ISSN International Register" href="https://www.issn.org/understanding-the-issn/the-issn-international-register/" target="_blank" rel="noopener noreferrer">ISSN International Portal</a> once the first issue is received.</p> <p>This rule applies only to print and CD-ROM publications.</p> <p><strong>Online resources are usually not ISSN assigned ahead of publication</strong>.</p> <p>Furthermore, for all new publications, <strong>5 articles are considered as a minimum</strong> for making a complete issue.</p> <h2>Applying for multiple ISSN</h2> <p>When the same publication is published:</p> <ul> <li>on different media (e.g.; print version and online version), or</li> <li>in different languages (e.g.; French edition and English edition),</li> </ul> <p>applications must be submitted for distinct ISSNs for each medium or each linguistic edition.</p> <h2>Changing ISSN</h2> <p>A new ISSN must be applied for in the following 2 cases:</p> <ul> <li>the publication’s medium changes (e.g.; a print magazine becomes an online magazine), or</li> <li>the publication’s title changes.</li> </ul> <p>Other changes such as:</p> <ul> <li>change of publisher,</li> <li>change of publication location,</li> <li>change of frequency,</li> <li>change of editorial policy,</li> <li>etc.</li> </ul> <p>do not result in a change of ISSN.</p> <h2>Special cases</h2> <p>In case:</p> <ul> <li>the publication merges with other titles,</li> <li>supplements are published,</li> <li>other editions are launched,</li> <li>etc.</li> </ul> <p>consult with your <a href="https://www.issn.org/en/the-centre-and-the-network/members-countries/the-issn-network-today/">ISSN National Centre</a>, which will determine whether specific ISSNs should be assigned.</p> </article> </section> <aside class="sidebar"> <div class="rebond"> <img src="https://www.issn.org/wp-content/uploads/2013/09/trouver-centre.jpg" alt="Find a national centre" /> <h3 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