https://community.appian.com/support/w/kb/2394/kb-2190-process-models-fail-to-save-with-non-nullable-input-acp-s-for-unattended-node-s-must-not-be-null-isasynchronous-erroren-USTelligent Community 12https://community.appian.com/support/w/kb/2394/kb-2190-process-models-fail-to-save-with-non-nullable-input-acp-s-for-unattended-node-s-must-not-be-null-isasynchronous-errorTue, 15 Jun 2021 03:26:53 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:addd0441-cb23-418d-933c-d85c0b5340d3Parmida Borhanihttps://community.appian.com/support/w/kb/2394/kb-2190-process-models-fail-to-save-with-non-nullable-input-acp-s-for-unattended-node-s-must-not-be-null-isasynchronous-error#commentsCurrent Revision posted to Appian Knowledge Base by Parmida Borhani on 6/15/2021 3:26:53 AM<br /> <h2>Symptoms</h2> <p><span>After an upgrade or site restart, process models fail to save with the following error:</span></p> <pre><span>Non-nullable input ACP(s) for unattended node(s) must not be null: isAsynchronous</span></pre> <p><span><img alt=" " border="0" src="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-11/isAsyncronous.PNG" /></span></p> <p><span>Users may also see&nbsp;<strong>*.l</strong> files generated in the <code>&lt;APPIAN_HOME&gt;/logs</code> directory after the upgrade or site restart. More information about these log files can be found <a href="https://docs.appian.com/suite/help/latest/Logging.html#engine-event-logs" rel="noopener noreferrer" target="_blank">here</a>.</span></p> <h2>Cause</h2> <p>The application server is in an inconsistent state due to an engine issue, usually an engine roll back or disconnect.</p> <h2>Action</h2> <h3>Self-managed</h3> <p>Follow <a href="/support/w/kb/447/kb-1232-how-to-clear-the-application-server-cache">KB-1232</a> to restart the application server and clear application server cache.</p> <h3>Cloud</h3> <p><a href="/support/">Open a support case</a> with Appian Support&nbsp;to coordinate an application server restart for the environment.</p> <h2>Affected Versions</h2> <p>This article applies to&nbsp;all versions of Appian.</p> <p>Last Reviewed: June 2021</p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: process models, engine, application server, application design</div> https://community.appian.com/support/w/kb/2394/kb-2190-process-models-fail-to-save-with-non-nullable-input-acp-s-for-unattended-node-s-must-not-be-null-isasynchronous-error/revision/6Tue, 15 Jun 2021 03:26:53 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:addd0441-cb23-418d-933c-d85c0b5340d3Parmida Borhanihttps://community.appian.com/support/w/kb/2394/kb-2190-process-models-fail-to-save-with-non-nullable-input-acp-s-for-unattended-node-s-must-not-be-null-isasynchronous-error#commentsRevision 6 posted to Appian Knowledge Base by Parmida Borhani on 6/15/2021 3:26:53 AM<br /> <h2>Symptoms</h2> <p><span>After an upgrade or site restart, process models fail to save with the following error:</span></p> <pre><span>Non-nullable input ACP(s) for unattended node(s) must not be null: isAsynchronous</span></pre> <p><span><img alt=" " border="0" src="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-13/isAsyncronous.PNG" /></span></p> <p><span>Users may also see&nbsp;<strong>*.l</strong> files generated in the <code>&lt;APPIAN_HOME&gt;/logs</code> directory after the upgrade or site restart. More information about these log files can be found <a href="https://docs.appian.com/suite/help/latest/Logging.html#engine-event-logs" rel="noopener noreferrer" target="_blank">here</a>.</span></p> <h2>Cause</h2> <p>The application server is in an inconsistent state due to an engine issue, usually an engine roll back or disconnect.</p> <h2>Action</h2> <h3>Self-managed</h3> <p>Follow <a href="/support/w/kb/447/kb-1232-how-to-clear-the-application-server-cache">KB-1232</a> to restart the application server and clear application server cache.</p> <h3>Cloud</h3> <p><a href="/support/">Open a support case</a> with Appian Support&nbsp;to coordinate an application server restart for the environment.</p> <h2>Affected Versions</h2> <p>This article applies to&nbsp;all versions of Appian.</p> <p>Last Reviewed: June 2021</p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: process models, engine, application server, application design</div> https://community.appian.com/support/w/kb/2394/kb-2190-process-models-fail-to-save-with-non-nullable-input-acp-s-for-unattended-node-s-must-not-be-null-isasynchronous-error/revision/5Wed, 09 Jun 2021 13:23:00 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:addd0441-cb23-418d-933c-d85c0b5340d3Zach Puderbachhttps://community.appian.com/support/w/kb/2394/kb-2190-process-models-fail-to-save-with-non-nullable-input-acp-s-for-unattended-node-s-must-not-be-null-isasynchronous-error#commentsRevision 5 posted to Appian Knowledge Base by Zach Puderbach on 6/9/2021 1:23:00 PM<br /> <h2>Symptoms</h2> <p><span>After an upgrade or site restart, process models fail to save with the following error:</span></p> <pre><span>Non-nullable input ACP(s) for unattended node(s) must not be null: isAsynchronous</span></pre> <p><span><img alt=" " border="0" src="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-13/isAsyncronous.PNG" /></span></p> <p><span>Users may also see&nbsp;<strong>*.l</strong> files generated in the <code>&lt;APPIAN_HOME&gt;/logs</code> directory after the upgrade or site restart. More information about these log files can be found <a href="https://docs.appian.com/suite/help/latest/Logging.html#engine-event-logs" rel="noopener noreferrer" target="_blank">here</a>.</span></p> <h2>Cause</h2> <p>The application server is in an inconsistent state due to an engine issue, usually an engine roll back or disconnect.</p> <h2>Action</h2> <h3>Self-managed</h3> <p>Follow <a href="/support/w/kb/447/kb-1232-how-to-clear-the-application-server-cache">KB-1232</a> to restart the application server and clear application server cache.</p> <h3>Cloud</h3> <p><a href="/support/">Open a support case</a> with Appian Support&nbsp;to coordinate an application server restart for the environment.</p> <h2>Affected Versions</h2> <p>This article applies to&nbsp;all versions of Appian.</p> <p>Last Reviewed: June 2021</p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: process models, engine, application server, application design</div> https://community.appian.com/support/w/kb/2394/kb-2190-process-models-fail-to-save-with-non-nullable-input-acp-s-for-unattended-node-s-must-not-be-null-isasynchronous-error/revision/4Tue, 08 Jun 2021 03:58:52 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:addd0441-cb23-418d-933c-d85c0b5340d3Parmida Borhanihttps://community.appian.com/support/w/kb/2394/kb-2190-process-models-fail-to-save-with-non-nullable-input-acp-s-for-unattended-node-s-must-not-be-null-isasynchronous-error#commentsRevision 4 posted to Appian Knowledge Base by Parmida Borhani on 6/8/2021 3:58:52 AM<br /> <h2>Symptoms</h2> <p><span>After an upgrade or site restart, process models fail to save with the following error:</span></p> <pre><span>Non-nullable input ACP(s) for unattended node(s) must not be null: isAsynchronous</span></pre> <p><span><img alt=" " border="0" src="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-13/isAsyncronous.PNG" /></span></p> <p><span>Users may also see&nbsp;<strong>*.l</strong> files generated in the <code>&lt;APPIAN_HOME&gt;/logs</code> directory after the upgrade or site restart. More information about these log files can be found <a href="https://docs.appian.com/suite/help/latest/Logging.html#engine-event-logs" rel="noopener noreferrer" target="_blank">here</a>.</span></p> <h2>Cause</h2> <p>The application server is in an inconsistent state due to an engine issue, usually an engine roll back or disconnect.</p> <h2>Action</h2> <h3>Self-managed</h3> <p>Follow <a href="/support/w/kb/447/kb-1232-how-to-clear-the-application-server-cache">KB-1232</a> to restart the application server and clear application server cache.</p> <h3>Cloud</h3> <p>Open a support case with Appian Support and provide a 15 minute window for an application server restart, during which the site will be unavailable. High Availability sites require a 30 minute window for a rolling application server restart with no downtime.</p> <h2>Affected Versions</h2> <p>This article applies to&nbsp;all versions of Appian.</p> <p>Last Reviewed: June 2021</p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: process models, engine, application server, application design</div> https://community.appian.com/support/w/kb/2394/kb-2190-process-models-fail-to-save-with-non-nullable-input-acp-s-for-unattended-node-s-must-not-be-null-isasynchronous-error/revision/3Tue, 08 Jun 2021 03:56:47 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:addd0441-cb23-418d-933c-d85c0b5340d3Parmida Borhanihttps://community.appian.com/support/w/kb/2394/kb-2190-process-models-fail-to-save-with-non-nullable-input-acp-s-for-unattended-node-s-must-not-be-null-isasynchronous-error#commentsRevision 3 posted to Appian Knowledge Base by Parmida Borhani on 6/8/2021 3:56:47 AM<br /> <h2>Symptoms</h2> <p><span>After an upgrade or site restart, process models fail to save with the following error:</span></p> <pre><span>Non-nullable input ACP(s) for unattended node(s) must not be null: isAsynchronous</span></pre> <p><span><img alt=" " border="0" src="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-13/isAsyncronous.PNG" /></span></p> <p><span>Users may also see&nbsp;<strong>*.l</strong> files generated in the <code>&lt;APPIAN_HOME&gt;/logs</code> directory after the upgrade or site restart.&nbsp;</span></p> <h2>Cause</h2> <p>The application server is in an inconsistent state due to an engine issue, usually an engine roll back or disconnect.</p> <h2>Action</h2> <h3>Self-managed</h3> <p>Follow <a href="/support/w/kb/447/kb-1232-how-to-clear-the-application-server-cache">KB-1232</a> to restart the application server and clear application server cache.</p> <h3>Cloud</h3> <p>Open a support case with Appian Support and provide a 15 minute window for an application server restart, during which the site will be unavailable. High Availability sites require a 30 minute window for a rolling application server restart with no downtime.</p> <h2>Affected Versions</h2> <p>This article applies to&nbsp;all versions of Appian.</p> <p>Last Reviewed: June 2021</p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: process models, engine, application server, application design</div> https://community.appian.com/support/w/kb/2394/kb-2190-process-models-fail-to-save-with-non-nullable-input-acp-s-for-unattended-node-s-must-not-be-null-isasynchronous-error/revision/2Fri, 04 Jun 2021 21:07:01 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:addd0441-cb23-418d-933c-d85c0b5340d3Zach Puderbachhttps://community.appian.com/support/w/kb/2394/kb-2190-process-models-fail-to-save-with-non-nullable-input-acp-s-for-unattended-node-s-must-not-be-null-isasynchronous-error#commentsRevision 2 posted to Appian Knowledge Base by Zach Puderbach on 6/4/2021 9:07:01 PM<br /> <h2>Symptoms</h2> <p><span>After an upgrade or site restart, a customer&#39;s process models will fail to save with the following error: Non-nullable input ACP(s) for unattended node(s) must not be null: isAsynchronous</span></p> <p><span><img alt=" " border="0" src="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-13/isAsyncronous.PNG" /></span></p> <p><span>Users may also see&nbsp;*.l files generated after the upgrade or site restart.&nbsp;</span></p> <h2>Cause</h2> <p>The application server is in an inconsistent state due to an engine issue, usually an engine roll back or disconnect.</p> <h2>Action</h2> <h3>Self-managed</h3> <p>Follow <a href="/support/w/kb/447/kb-1232-how-to-clear-the-application-server-cache">KB-1232</a> to restart the application server and clear application server cache.</p> <h3>Cloud</h3> <p>Open a support case with Appian support and provide a 15 minute window for an application server restart, during which the site will be unavailable. HA sites will requires a 30 minute window for a rolling application server restart with no downtime.</p> <h2>Affected Versions</h2> <p>This article applies to&nbsp;all versions of Appian.</p> <p>Last Reviewed: June 2021</p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: process models, application design</div> https://community.appian.com/support/w/kb/2394/kb-2190-process-models-fail-to-save-with-non-nullable-input-acp-s-for-unattended-node-s-must-not-be-null-isasynchronous-error/revision/1Fri, 04 Jun 2021 21:06:53 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:addd0441-cb23-418d-933c-d85c0b5340d3Zach Puderbachhttps://community.appian.com/support/w/kb/2394/kb-2190-process-models-fail-to-save-with-non-nullable-input-acp-s-for-unattended-node-s-must-not-be-null-isasynchronous-error#commentsRevision 1 posted to Appian Knowledge Base by Zach Puderbach on 6/4/2021 9:06:53 PM<br /> <h2>Symptoms</h2> <p><span>After an upgrade or site restart, a customer&#39;s process models will fail to save with the following error: Non-nullable input ACP(s) for unattended node(s) must not be null: isAsynchronous</span></p> <p><span><img alt=" " border="0" src="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-13/isAsyncronous.PNG" /></span></p> <p><span>Users may also see&nbsp;*.l files generated after the upgrade or site restart.&nbsp;</span></p> <h2>Cause</h2> <p>The application server is in an inconsistent state due to an engine issue, usually an engine roll back or disconnect.</p> <h2>Action</h2> <h3>Self-managed</h3> <p>Follow <a href="/support/w/kb/447/kb-1232-how-to-clear-the-application-server-cache">KB-1232</a> to restart the application server and clear application server cache.</p> <h3>Cloud</h3> <p>Open a support case with Appian support and provide a 15 minute window for an application server restart, during which the site will be unavailable. HA sites will requires a 30 minute window for a rolling application server restart with no downtime.</p> <h2>Affected Versions</h2> <p>This article applies to&nbsp;all versions of Appian.</p> <p>Last Reviewed: June 2021</p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: process models, application design</div>