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<h1>409 Conflict - Duplicate Record</h1>
<div class="trix-content"><p><strong>Message:</strong><br> <code>Contact already exists. Existing ID: XXXXXXXXXXX</code></p><p><strong>Cause:</strong><br> Trying to create a contact (or deal, company, etc.) that already exists—usually due to duplicate <strong>email</strong> or <strong>unique custom property</strong>.</p><p><strong>Fix:</strong></p><ul><li>Use the object’s existing ID to update instead of creating a new one.</li><li>Before creating a contact in your source system, ensure that it has an unique email addresses. A validation on the uniqueness of the email address can be enabled in the source system so duplicates are avoided.&nbsp;</li><li>Use an unique id/key for all new and existing contacts so you can ensure uniqueness across all systems ( e.g. store the Hubspot Id into the source system).</li></ul><p><br></p></div>
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