/mcpError Message %UC_ICSA-2-InterClusterSyncAgentSyncFailure: %[remotePeerAddress=String][AppID=String] [ClusterID=String][NodeID=String]: Cisco Intercluster Sync Agent service detected periodic sync failure Explanation Cisco Intercluster Sync Agent service detected an exception. Recommended Action Cisco Intercluster Sync Agent service will try resyncing every 5 minutes. Error Message %UC_ICSA-6-InterClusterSyncAgentAxlClientTimeout: %[remotePeerAddress=String][AppID=String] [ClusterID=String][NodeID=String]: Cisco Intercluster Sync Agent service detected periodic sync failure Explanation Cisco Intercluster Sync Agent service could not establish an AXL connection with the remote peer. The service will try resyncing every 5 minutes. Recommended Action Verify that the Cisco AXL Web Service on the remote peer is running. Error Message %UC_ICSA-2-InterClusterSyncAgentHeapSpaceError: %[AppID=String][ClusterID=String] [NodeID=String]: Cisco Intercluster Sync Agent service detected a heap space error Explanation Cisco Intercluster Sync Agent service detected a heap space error. Recommended Action Restart Cisco Intercluster Sync Agent service. Error Message %UC_ICSA-6-InterClusterSyncAgentStatus: %[remotePeerAddress=String][AppID=String] [ClusterID=String][NodeID=String]: Periodic sync completed successfully Explanation Periodic sync completed successfully for remote peer. Recommended Action Informational purposes only; no action is required. Error Message %UC_ICSA-6-InterClusterSyncAgentControllerStatus: %[remotePeerAddress=String][AppID=String] [ClusterID=String][NodeID=String]: Peer sync controller created successfully Explanation Peer sync controller created successfully for remote peer. Recommended Action Informational purposes only; no action is required. Error Message %UC_ICSA-2-InterClusterSyncAgentPeerPeriodicSyncingFailure: %[remotePeerAddress=String] [lastSynchronizedTime=String][AppID=String][ClusterID=String][NodeID=String]: Cisco Intercluster Sync Agent service detected periodic syncing failure with an inter-cluster peer Explanation Cisco Intercluster Sync Agent service detected a failure for the periodic syncing. It will try to recover the periodic syncing automatically if the Service Parameter "Enable Auto Recovery for Inter-cluster Peer Periodic Syncing Failure" of Inter-Cluster Sync Agent service is enabled. Recommended Action Cisco Intercluster Sync Agent service detected a failure for the periodic syncing. It will try to recover the periodic syncing automatically if the Service Parameter "Enable Auto Recovery for Inter-cluster Peer Periodic Syncing Failure" of Inter-Cluster Sync Agent service is enabled. 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 126/343