/mcpError Message %UC_CTI-4-CtiMaxConnectionReached: %[AppID=String][ClusterID=String] [NodeID=String]: Maximum number of application connections is reached; application connection rejected. Explanation Maximum number of CTI connections has been reached, no new connection will be accepted unless an existing connection is closed Recommended Action Check the CTI Manager service parameter Maximum CTI Connections for the maximum number of connections. Carefully consider increasing the service parameter value or disconnecting CTI applications that are unnecessary. Refer to Unified CM Solution Reference Network Design document in www.cisco.com based on the version you are using for maximum number of applications and devices supported by CTI Error Message %UC_CTI-4-InvalidQBEMessage: %[CTIConnectionType=String][InstanceNumber=Long] [PDUNumber=Long][AppID=String][ClusterID=String][NodeID=String]: An invalid QBE PDU is received. Explanation QBE PDU from application is invalid Recommended Action This alarm indicates that TSP/JTAPI has reported a QBE PDU that cannot be recognized by 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-CtiProviderOpenFailure: %[CTIconnectionId=Long][LoginUserId=String][Reason=Enum] [IPaddress=String][IPv6address=String][AppID=String][ClusterID=String][NodeID=String]: CTI application failed to open provider; application startup failed. Explanation The application is unable to open provider. The IP address is shown in either IPv4 or IPv6 format depending on the Application's IP addressing mode Recommended Action Review the reason code and the recommended action within the reason code Reason Code - Enum Definitions Enum Definitions - Reason Value Definition 0 Unknown 0x8CCC0075 (2362179701) Login request to authenticate user has timed out. Possible causes include LDAP server misconfiguration such as LDAP server referrals misconfiguration or Unified CM node experiencing high CPU usage. Recommended action is to verify the CPU utilization is in the safe range for Unified CM (this can be monitored 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 7/343