ATC8
Explanation
An error has occurred during the processing of an inbound function management header (FMH). Either a length error has been detected, for example, incomplete FMH received, or an invalid field has been detected within the FMH.
System action
The transaction is abnormally terminated with a CICS transaction dump.
User response
Notify the system programmer of the error. The problem is probably in the remote system that has sent the invalid FMH.