Each of the services has an installation
exit. Each installation exit for a service has two exit points:
- The Preprocessing exit point. This exit
point occurs after an application program calls a service, but before
the service starts processing. For example, you can use this exit
point to check or change the parameters that the application passes
on the call, or to end the call. You can also perform additional security
checks.
- The Postprocessing exit point. This exit
point occurs after the service has finished processing, but before
the service returns control to the application program. For example,
you can use this exit point to check and change the return code from
the service or perform cleanup processing.