CASSI9005E Error, could not inform REM of debug server termination, rc = return-code

The attempt to inform the region manager of the debug server's termination failed due to an error in DosExecPgm.
System Action:
The region manager will not know that the debug server has terminated. If a terminal is attached to that server it will wait indefinitely in an X-SYSTEM state.
Module:
dfhecics
Destination:
Console and standard error