04A

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.
008
The program made an unsupported request for the data management
GET macro.
012
The program made an unsupported request for the data management
PUT macro.

System action
The MVSSERV program ends abnormally. 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)