KB-1244 "The objects for <Quick App> have been used or modified from outside the Quick Apps Designer" error thrown when attempting to delete a Quick Apphttps://community.appian.com/support/w/kb/459/kb-1244-the-objects-for-quick-app-have-been-used-or-modified-from-outside-the-quick-apps-designer-error-thrown-when-attempting-to-delete-a-quick-appen-USTelligent Community 12KB-1244 "The objects for <Quick App> have been used or modified from outside the Quick Apps Designer" error thrown when attempting to delete a Quick Apphttps://community.appian.com/support/w/kb/459/kb-1244-the-objects-for-quick-app-have-been-used-or-modified-from-outside-the-quick-apps-designer-error-thrown-when-attempting-to-delete-a-quick-appMon, 06 Mar 2017 22:35:57 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:5bed822b-8ed4-4693-9712-874bb268c686Nick Vigilantehttps://community.appian.com/support/w/kb/459/kb-1244-the-objects-for-quick-app-have-been-used-or-modified-from-outside-the-quick-apps-designer-error-thrown-when-attempting-to-delete-a-quick-app#commentsCurrent Revision posted to Appian Knowledge Base by Nick Vigilante on 3/6/2017 10:35:57 PM<br /> <div class="row content_container"> <h2 id="symptoms">Symptoms</h2> <p>When attempting to delete a Quick App that is no longer needed, the following error is displayed:</p> <p><a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-11/pastedimage1488839729593v1.png"><img src="/resized-image/__size/1200x523253/__key/communityserver-wikis-components-files/00-00-00-00-11/pastedimage1488839729593v1.png" alt=" " /></a></p> <pre><code>Cannot Delete Quick App The objects for My Cool Quick App have been used or modified from outside the Quick Apps Designer. To avoid overwriting or losing someone else&#39;s work, this Quick App can no longer be modified or deleted. </code></pre> <h2 id="cause">Cause</h2> <p>One or more objects belonging to the Quick App have been modified outside of Quick Apps (e.g., using Appian Designer or externally).</p> <h2 id="action">Action</h2> <p>Open Appian Designer and delete all objects associated with the quick app except the &quot;Quick Apps Rules and Constants&quot; folder, a system folder that is created on app server startup after installing/upgrading to Appian 16.2 or later.</p> <h2 id="workaround">Workaround</h2> <p>Remove the collaborators from the Quick App so it is not accessible.</p> <h2 id="affected-versions">Affected Versions</h2> <p>This article applies to Appian 16.2 and later.</p> </div> <p>Last Reviewed:&nbsp;March 2017</p> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: application design, Quick Apps</div>