CASCS1006E Receive for trans-id from system system-id failed, RC = comms-primary-RC.

Inbound transaction trans-id from system system-id failed with a primary communications return code of comms-primary-RC.
System Action:
The transaction is abnormally terminated.
Resolution:
Correct the communications problem indicated by comms-primary-RC.
Module:
dfhebms (issued in dfheserv)
Destination:
TDQ CSMT.