/mcpError Message %UC_CTI-4-kCtiDirectoryLoginFailure: %[SeqNumber=Long][AppID=String][ClusterID=String] [NodeID=String]: CTI directory login failure.. Explanation CTI Manager is unable to login to directory. As a result, the application may not be able to access the controlled device list. Recommended Action In Cisco Unified CM Administration, verify that the correct username and password has been configured and is being used for CTIManager login. If LDAP is used for authentication, check to confirm that the LDAP synchronization is configured and is working. Error Message %UC_CTI-4-kCtiDeviceOpenFailAccessDenied: %[LoginUserId=String][DeviceName=String] [DeviceType=Long][AppID=String][ClusterID=String][NodeID=String]: DeviceOpenRequest failure.. Explanation Application is trying to access a device that is not in its control. Recommended Action Check the application sending the request or add the device to the user control list. Error Message %UC_CTI-3-kCtiIllegalQbeHeader: %[AppID=String][ClusterID=String][NodeID=String]: Illegal QBE header.. Explanation Because of illegal QBE header, QBE message has been rejected. Recommended Action QBE header could be fragmented due to TCP fragmentation. Review your network configuration to fix any TCP fragmentation issue. Error Message %UC_CTI-4-kCtiLineOpenFailAccessDenied: %[SeqNumber=Int][DirNum=String][Partition=String] [DeviceName=String][UserName=String][AppID=String][ClusterID=String][NodeID=String]: Line open failed.. Explanation Application failed to open a line. Recommended Action Add the device associated with the line to the user device control list. Error Message %UC_CTI-4-kCtiIllegalEnumHandle: %[EnumHandle=Long][EnumObjectType=String][AppID=String] [ClusterID=String][NodeID=String]: Enumeration handle is not valid.. Explanation The enumeration handle associated with the process of enumerating devices, lines or DNs is invalid. Recommended Action Check whether all devices, lines or DNs configured for the application are available to the application. If the application uses an End User, check the Device Association section under the End User Configuration in Cisco Unified CM Administration (User Management > End User). If the application uses an Application User, check under Device Information section for that Application User in Cisco Unified CM Administration (User Management > Application User). 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 24/343