# Possible Duplicate Tickets
<h1>Possible Duplicate Tickets</h1><p>The “Possible duplicates” block helps find tickets with the same subject. This is useful when a customer sends the same email or message several times.</p><h2>How the mechanism works</h2><p>Swarmica displays tickets that may be duplicates of the current ticket. You can open a candidate, compare the requests, and select tickets to merge.</p><p>Merging lets the team continue with a single request instead of processing identical tickets in parallel.</p><h2>When it is useful</h2><ul><li>a customer sends the same message again;</li><li>the same message is submitted through multiple channels;</li><li>several employees register the same request.</li></ul><h2>Important performance note</h2><p><strong>With large ticket volumes, possible-duplicate detection can affect system performance.</strong> Enable it only when this check is genuinely needed. Before enabling it on a large database, assess the load and test the feature.</p><h2>How to enable the block</h2><p>Activate the <code>__show_ticket_duplicates</code> feature flag. General rules are described in <a href="https://support.swarmica.com/article/ru/596-фича-флаги-features-возможность-включать-и-выключать-блоки-функций-в-swarmica.html">Feature flags (features) in Swarmica</a>.</p><p>The feature is available if the corresponding license is active.</p>