830

Explanation
Global resource serialization encountered an error
during processing of a DEQ macro instruction.
The resource specified
by the DEQ is the target of an outstanding ENQ macro instruction with
the MASID and MTCB options specified. The task that issued the ENQ
macro instruction with MASID and MTCB should issue the DEQ macro instruction
before this task.

System action
The system issues an ABEND dump.

System programmer response
If the problem persists, search problem
reporting data bases for a fix for the problem. If no fix exists,
contact the IBM® Support Center.
 Provide the dump.

Programmer response
Correct the program so that the DEQ macro
instruction is issued only after DEQs have been issued for any outstanding
MASID/MTCB ENQs. Recompile and run the job step again.

Source
Global resource serialization