This error is reported by DPL Stub program (DFHMADPL). One of the following conditions exist, the EXEC CICS® CHECK ACQPROCESS command has failed, the acquired process was forced to complete, potentially via a CANCEL ACQPROCESS issued outside the CICS Service Flow Runtime, or the Navigation manager (DFHMAMGR) abended.
Dump the error log (DFHMAERF) to determine the problem. Also check the process status using the CBAM transaction (see the CICS Business Transaction Services manual). If BTS auditing was turned on for this PROCESSTYPE, you can dump the audit log to help determine the reason for failure. In addition, you should also check the CICS log for diagnostics assistance. If the problem is an abend, check the abend code in the CICS Messages and Codes manual for the reason and appropriate actions.