IMS Connect protocol level

The IMS Connect protocol level identifies which transaction features and modes IMS Connect is configured to support.

Any successfully processed output message from the IMS Connect message exit sent to a client contains a segment called the complete status message (CSM). The third byte of the CSM is a status flag. A flag value of X'10' indicates that the fourth byte of the CSM is a second flag byte which contains the current IMS Connect protocol level.

X'00'

All features and modes are enabled except CM0 ACK NOWAIT transaction support for send-and-receive transactions.

X'01'

This protocol level is reserved.

X'02'

CM0 ACK NOWAIT transaction support is enabled in addition to all other support.

X'03'

Return codes from the RACROUTE user verification call are supported in the request status message (RSM).

If the CSM indicates that CM0 ACK NOWAIT support is enabled, the client can then submit a CM0 ACK NOWAIT transaction by setting the IRM_F1_NOWAIT flag in the IMS request message (IRM) segment of the input message sent to IMS Connect and specifying an IRM_TIMER value of X'E9'. The NOWAIT flag indicates the client will not wait for a final timeout message from IMS Connect after acknowledging the successful receipt of the transaction.