838

Explanation
The system denied an ENQ macro request because
of serious damage to the ENQ/DEQ control blocks.

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 ABEND dump.

Programmer response
Resubmit the job after the system has been
re-IPLed. Do the following: Obtain the address of the DEQ parameter list from register 1 in
the UNIQUE-3 column of the SVC 30 or SVC 38 entry in the system trace.
Check the parameter list against the SVC 30 or 38 mapping. When
analyzing the parameter list, remember that the unit control block
(UCB) pointer, if present, is the address of a field that, in turn,
contains the address of the UCB. If the parameter list contains
incorrect data, continue diagnosis in the program that issued the
macro.

Source
Global resource serialization