The WebSphere® MQ message identifier set by the service requestor for use on all MQI Puts in CICS® Service Flow Runtime MQ server adapters and CICS Service Flow Runtime reply messages. It is derived from the CICS Service Flow Runtime message header (DFHMAH) structure in the request message. See DFHMAH field definitions for information on this field. This field will be reported when an error or failure occurs in Asynchronous request processing and DFHMAH-MSGID is loaded by the service requestor. For information regarding WebSphere MQ programming, see WebSphere MQ Application Programming Reference and the WebSphere MQ Application Programming Guide.