KB-1216 "The encryption key for <APPIAN_USER> was not populated during login" error thrown when executing a process that requires access to the Secure Credentials Storehttps://community.appian.com/support/w/kb/431/kb-1216-the-encryption-key-for-appian_5f00_user-was-not-populated-during-login-error-thrown-when-executing-a-process-that-requires-access-to-the-secure-credentials-storeen-USTelligent Community 12KB-1216 "The encryption key for <APPIAN_USER> was not populated during login" error thrown when executing a process that requires access to the Secure Credentials Storehttps://community.appian.com/support/w/kb/431/kb-1216-the-encryption-key-for-appian_5f00_user-was-not-populated-during-login-error-thrown-when-executing-a-process-that-requires-access-to-the-secure-credentials-storeMon, 06 Mar 2017 21:04:26 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:d105cd38-39bd-4ea0-9699-6e3d6b5e5d10Nick Vigilantehttps://community.appian.com/support/w/kb/431/kb-1216-the-encryption-key-for-appian_5f00_user-was-not-populated-during-login-error-thrown-when-executing-a-process-that-requires-access-to-the-secure-credentials-store#commentsCurrent Revision posted to Appian Knowledge Base by Nick Vigilante on 3/6/2017 9:04:26 PM<br /> <div class="row content_container"> <h2 id="symptoms">Symptoms</h2> <p>When attempting to execute a node in a process model that requires access to the <a href="https://docs.appian.com/suite/help/latest/Secure_Credentials_Store.html">Secure Credentials Store</a> and <strong>UsePerUser</strong> is set to true, the following error is thrown:</p> <pre><code>ERROR &lt;PACKAGE_NAME&gt; - ConnectorRuntimeException [title=Failed to retrieve value from SCS username=, com.appian.integration.core.exception.ConnectorRuntimeException: com.appiancorp.suiteapi.common.exceptions.AppianRuntimeException: com.appiancorp.suiteapi.common.exceptions.AppianException: An error occurred while accessing the per-user credentials from the Secure Credentials Store. The encryption key for &lt;APPIAN_USER&gt; was not populated during login. See the documentation for proper configuration when using a custom authentication provider. (APNX-1-4221-001)] </code></pre> <h2 id="cause">Cause</h2> <p>Activity Chaining has not been enabled in the connector lines prior to that node.</p> <h2 id="action">Action</h2> <p>Enable Activity Chaining on all prior connector lines.</p> <h2 id="workaround">Workaround</h2> <p>Set <strong>UsePerUser</strong> to be false and supply a single set of valid credentials in the <strong>Third-Party Credentials</strong> window in the <strong>Admin Console</strong>.</p> <h2 id="affected-versions">Affected Versions</h2> <p>This article applies to all versions of Appian.</p> </div> <p>Last Reviewed:&nbsp;March 2017</p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: administration, process models, admin console, application design</div>