To obtain information about messages saved by the message user routine or responses saved by the message notify user routine, specify DATATYPE=MSGIN. You can request information about messages from a particular member (by specifying the member's token on the SOURCE parameter) or from all members.

The system returns data for each message that includes a token that identifies the message, user data associated with the message, and the member token of the member that sent the message. This data is mapped by the MQAMSGINSUMMARY record in IXCYMQAA.