051

Explanation
An MVSSERV program made an incorrect request for
data management services. A reason code provides further information: Code
Explanation
004
The program passed an incorrect operation code in a request for
a data management service.

System action
The MVSSERV program ends. The system writes an
ABEND dump.

System programmer response
If the problem recurs and if the program
is not in error, search problem reporting data bases for a fix for
the problem. If no fix exists, contact the IBM® Support Center. Provide the ABEND dump.

Source
Time Sharing Option Extensions (TSO/E)