CA System Agent has below errors in the receiver and transmitter logs.
08/10/2021 01:08:45.562 PDT-0700 1 TCP/IP Controller Plugin.Receiver pool thread <Regular:1>.CybReceiverChannel.receive[:234] - cybermation.library.communications.CybConversationException: Invalid identifier
08/10/2021 01:08:36.642 PDT-0700 1 TCP/IP Controller Plugin.Transmitter pool thread <Regular:1>.CybTargetHandlerChannel.sendMessage[:627] - Error sending message to CAWA_PROD: cybermation.library.communications.CybConversationException: Invalid identifier
This issue occurs in WADE 12.3 when the wrong release is set in the Topology.
For R12 agent, set 11.4 or above.
Release : CA WADE 12.3
Below Steps need to be followed.
1) Stop the Agent
2) Rename the database folder
3) Start Agent
4) Login to the DC and set the correct release version of the Agent in the machine definition
This would mostly applicable for the DE manager with 12.3 version and if the Agent is 11.3