From within a message notify user routine, one or more responses are eligible to be saved. The message and any responses still associated with it can be saved as a single entity, or each individual response can be saved independently of the message. The saved message/response entity can be processed by a message notify user routine at a later time by invoking the IXCMSGC Call Exit service to pass control to a message notify user routine.

When saving a message and its responses (if any) as a single entity, the data saved is sufficient to create a new MNPL that contains a descriptor for the message itself and a table of target/response information. Once the message/response entity is saved, the individual responses will not be accessible to the instance of the message notify user routine that saved the entity. To access the responses that remain associated with the saved message/response entity, you can invoke the IXCMSGC Call Exit service to give control to a new instance of a message notify user routine, from which the IXCMSGIX service can be used to retrieve the response message data or the IXCMSGC service can be used to save or discard an individual response.