/mcpare not required to be controlled. The stability of the system will be impacted if the total number of devices controlled by applications is not properly restricted to the device limit specified by the CTIManager service parameter, Maximum Devices Per Node Error Message %UC_CTI-4-ApplicationConnectionError: %[CTIConnectionType=String][InstanceNumber=Long] [AppID=String][ClusterID=String][NodeID=String]: CTIManager is unable to allow connections from Applications.. Explanation CTIManager is unable to accept connections from applications Recommended Action CTIManager has encountered problems initializing TCP connections. Restart the CTIManager service to resolve this problem Error Message %UC_CTI-3-kCtiQbeLengthMisMatch: %[AppID=String][ClusterID=String] [NodeID=String]: OutputQbeMessage: length mismatch.. Explanation QBE header length mismatch exists. Recommended Action This alarm indicates that TSP/JTAPI is incompatible with the version of CTIManager. Contact the support organization for the affected application, install the JTAPI or TSP plugin and restart the application. JTAPI/TSP plugins are available from the Find and List Plugins window in Cisco Unified CM Administration (Application > Plugins). Error Message %UC_CTI-3-kCtiInvalidQbeSizeAndOffsets: %[AppID=String][ClusterID=String] [NodeID=String]: InvalidQBESizeAndOffsets; QBE message decoding encountered illegal size or offset.. Explanation QBE Packet received from the application is not encoded correctly. Recommended Action A TSP/JTAPI interface error occurred; the QBE message may not be formatted correctly. TSP/JTAPI might be incompatible with the version of CTIManager. Install the JTAPI or TSP plugin (Cisco Unified CM Administration > Application > Plugins) and restart the application. Error Message %UC_CTI-3-kCtiSsRegisterManagerErr: %[AppID=String][ClusterID=String][NodeID=String]: Unable to register CtiLine with SSAPI.. Explanation CTI cannot register CtiLine with SSAPI. Recommended Action Check the status of the Cisco CallManager service in Cisco Unified Serviceability > Tools > Control Center - Featured Services. At least one Cisco CallManager service should be running in the cluster for CTIManager to register feature managers. Restart the CTIManager service if the problem persists. Error Message %UC_CTI-4-kCtiMytcpErrSocketBroken: %[AppID=String][ClusterID=String][NodeID=String]: Socket connection has been broken.. Explanation The TCP connection has been lost. Recommended Action Although connection to the application is lost, no action is required if lost connection was intentional. If loss of connectivity was unintentional, investigate what might have caused connectivity to be lost and restore the connection. 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 23/343