MsgRetryReason (MQLONG)
This field specifies the reason code from the previous attempt to put the message.
This field is the reason code from the previous attempt to put the message; it is one of the MQRC_* values.
This is an input field to the exit. The value in this field is not meaningful if ExitReason is MQXR_INIT. The field is not present if Version is less than MQCXP_VERSION_2.
The following fields in this structure are not present if Version is less than MQCXP_VERSION_3.