The exception exit is taken for the same errors as a SYNAD exit. If you have both an active SYNAD routine and an EXCEPTIONEXIT routine, the exception exit routine is processed first.

The exception exit is associated with the attributes of the data set (specified by the DEFINE) and is loaded on every call. Your exit must reside in the LINKLIB and the exit cannot be called when VSAM is in cross-memory mode.

When your exception exit routine completes processing, return to your main program as described in Return to a Main Program.

Related reading: For information about how exception exits are established, changed, or nullified, see z/OS DFSMS Access Method Services Commands.