Summary

The following tables summarize the structure data types used in the MQI.

Table 1. Structure data types used on MQI calls (or exit functions):
Structure	Description	Calls where used
MQACH	API exit chain header
MQAIR	Authentication information record	MQCONNX
MQAXC	API exit context
MQAXP	API exit parameter
MQBMHO	Buffer to message handle options	MQBUFMH
MQBO	Begin options	MQBEGIN
MQCBD	Callback descriptor	MQCB
MQCBO	Create-bag options	mqCreateBag
MQCHARV	Variable length string	MQINQMP
MQCNO	Connect options	MQCONNX
MQCSP	Security parameters	MQCONNX
MQCTLO	Callback options	MQCTL
MQDMPO	Delete message property options	MQDLTMP
MQGMO	Get-message options	MQGET
MQIMPO	Inquire message property options	MQINQMP
MQMD	Message descriptor	MQBUFMH, MQMHBUF, MQCB, MQGET, MQPUT, MQPUT1
MQMHBO	Message handle to buffer options	MQMHBUF
MQOD	Object descriptor	MQOPEN, MQPUT1
MQOR	Object record	MQOPEN, MQPUT1
MQPD	Property descriptor	MQSETMP
MQPMO	Put-message options	MQPUT, MQPUT1
MQPMR	Put-message record	MQPUT, MQPUT1
MQRR	Response record	MQOPEN, MQPUT, MQPUT1
MQSCO	SSL configuration options	MQCONNX
MQSD	Subscription descriptor	MQSUB
MQSMPO	Set message property option	MQSETMP
MQSRO	Subscription request options	MQSUBRQ
MQSTS	Status reporting structure	MQSTAT

Table 2. Structure data types used in message data:
Structure	Description
MQCIH	CICS® information header
MQCFH	PCF header
MQEPH	Embedded PCF header
MQDH	Distribution header
MQDLH	Dead letter (undelivered message) header
MQIIH	IMS information header
MQMDE	Message descriptor extension
MQRFH	Rules and formatting header
MQRFH2	Rules and formatting header 2
MQRMH	Reference message header
MQTM	Trigger message
MQTMC2	Trigger message (character format 2)
MQWIH	Work information header
MQXQH	Transmission queue header

Note: The MQDXP structure (data conversion exit parameter) is described in Data-conversion exit, together with the associated data conversion calls.