Exit routine coexistence considerations

Exit routines that run in IMS Version 13 or IMS 14 will work without modification in IMS 15. They will not, however, be able to use the latest functions without being modified.

Exit routines that run in multiple versions of IMS must be sensitive to the version of the Standard User Exit Parm List (SXPL). The version number of the SXPL can change if fields are added to the SXPL in a release of IMS.

For example, an exit routine that runs in a mixed-version IMSplex that needs to access the SXPLASWA field in the SXPL, which was introduced in IMS Version 11, must look for SXPLVER6 or later.

SXPLVER6 is the most recent version of the SXPL.