Defining CICS backout in-doubt processing

During the period between the sending of the syncpoint request to IMS and the receipt of the positive response, CICS® does not know whether the remote system has committed. This period is known as the indoubt period.

CICS processing during the indoubt period is controlled by the DEFINE TRANSACTION IN-DOUBT parameter (or the DFHPCT DTB= parameter).

DEFINE TRANSACTION IN-DOUBT (WAIT) or DTB=(YES,WAIT) must be specified in order to ensure consistency between the IMS and CICS subsystems within an ISC network.