/mcpError Message %UC_EXTENSIONMOBILITY-6-EMCCUserLoggedIn: %[DeviceName=String][TimeStamp=String] [UserID=String][AppID=String][ClusterID=String][NodeID=String]: EMCC login was successful.. Explanation The user has successfully logged in to extension mobility cross-cluster (EMCC). Recommended Action Informational purposes only; no action is required. Error Message %UC_EXTENSIONMOBILITY-6-EMCCUserLoggedOut: %[DeviceName=String][TimeStamp=String] [UserID=String][AppID=String][ClusterID=String][NodeID=String]: EMCC logout was successful.. Explanation The user has successfully logged out of extension mobility cross-cluster (EMCC). Recommended Action Informational purposes only; no action is required. Error Message %UC_EXTENSIONMOBILITY-6-EMAppStarted: %[ServletName=String][AppID=String] [ClusterID=String][NodeID=String]: EM Application started . Explanation Application started successfully. Recommended Action No action required. Error Message %UC_EXTENSIONMOBILITY-5-EMAppStopped: %[ServletName=String][AppID=String] [ClusterID=String][NodeID=String]: EM Application stopped. Explanation Application is shutting down gracefully because of an unloaded from Tomcat. Recommended Action No action required on this application. Error Message %UC_EXTENSIONMOBILITY-3-EMAppInitializationFailed: %[ServletName=String][AppID=String] [ClusterID=String][NodeID=String]: EM Application not started. Explanation Error occurred while starting application. Recommended Action See application logs for error. Default location for the logs are at /var/log/active/tomcat/logs/em/log4j/ Error Message %UC_EXTENSIONMOBILITY-3-EMServiceConnectionError: %[ServletName=String][AppID=String] [ClusterID=String][NodeID=String]: EM Service not reachable. Explanation EM Service might be down in one or more nodes in the cluster. Recommended Action Check if Cisco Extension Mobility service is running on all nodes of the cluster where the service is activated. 5/24/26, 3:34 AM System Error Messages for Cisco Unified Communications Manager 15 - Cisco https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/err_msgs/15_x/ccmalarms15.html 107/343