When an IMS™ MPP issues a call for IMS TM services (like a GU or an ISRT), IMS returns information about the results of the call in a control block called the I/O program control block (I/O PCB). When using the Assist module, the contents of the I/O PCB are:

LTERM NAME

Blanks (8 bytes)

RESERVED

See Status codes (2 bytes)

STATUS CODE

See Status codes (2 bytes)

DATE/TIME

Undefined (8 bytes)

INPUT MSG. SEQ. #

Undefined (4 bytes)

MESSAGE OUTPUT DESC. NAME

Blanks (8 bytes)

USERID

PSBname of Listener (8 bytes)