X'2020' PURGE MSGMRQF1 FLAG INVALID

Explanation
 The MSGMRQF1 flag in the MRQ prefix passed to
the IMS message requeuer processor
(IQCQMRQ0) by the QCF client routine (load function) is invalid.

Programmer response
 The MSGMRQF1 flag byte is in the
MRQ prefix segment (MSGMRQPF). The MSGMRQPF segment starts at the
beginning of the I/O area. The flag byte should be a multiple of hex
4. This is either an IMS or QCF
internal error.