JES3 OSE modification exit

The sample library member EQQUX191 contains the assembler source code of a JES3 OSE modification exit, IATUX19. IBM Z Workload Scheduler uses events generated from the exit to detect output group purge.

If you are already using an IATUX19, you should include the code in your existing exit and reassemble.

Note: If you are using JES3 Exit IATUX72 then this exit must return with R15 = 8 to call IATUX19.