X'A00C' QMR50 - UNLOAD - GU CALL ERROR

Explanation
The Get Unique (GU) call to the QMGR returned an error code.

Programmer response
REG15 in the REG0-REG15 save area contains the return code. CMDQNAME in
MRQWORK is the queue name being processed. QMRWLWA in MRQWORK contains the
QMGR parameter list. Trace the error to QMGR GU processing.