When a backout is required

In some situations, a transaction must back out in response to a request received from a partner.

A backout is required in the following circumstances:

When SYNCPOINT ROLLBACK is received
After ISSUE ABEND is sent
After EIBERR and EIBFREE (CDBERR and CDBFREE in the basic interface) are returned together.

The conversation state does not always reflect the requirement to back out. However, CICS® is aware of this requirement and converts the next SYNCPOINT request to a SYNCPOINT ROLLBACK request. If no SYNCPOINT or SYNCPOINT ROLLBACK request is issued before the end of the task, the task is abended (ASPN), and all recoverable resources are backed out.