530

Explanation
Global resource serialization encountered an error
during processing of a DEQ macro instruction.
The DEQ macro
instruction was issued in an asynchronous exit routine for a resource.
That resource was previously enqueued by another routine in the same
task.  However, the task had not yet received control of the resource.

System action
The system issues an ABEND dump.

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

Programmer response
Correct the program so that the DEQ macro
instruction is issued only after the task has control of the resource.
 If possible, avoid issuing the DEQ macro instruction in the exit
routine. Recompile and run the job step again.

Source
Global resource serialization