Specifying an acknowledgement timeout on CM1 transaction messages

In the OTMA header of an input message for a send-then-commit (CM1) transaction that uses either synclevel=confirm or synclevel=syncpt, you can specify a timeout interval to limit how long IMS waits for an acknowledgement (ACK or NAK) to the output response.

To set the time out interval:

Specify the interval in minutes using decimal integers in the 1–byte field at offset X'1E' of the message control information prefix of the transaction message.
Set flag X'08' at byte 5 of the state data