EDG_EXIT100 exit routines run in SYSTEM KEY 0 or 5 AMODE(31) RMODE(ANY) in the user's address space. KEY 0 is used when a WTO address or an ACERO address is provided, and KEY 5 is used when a JFCB address is provided. Exit modules can be contained in any APF authorized LNKLST library or an APF authorized library named on CSVDYNEX macro invocation.

You can write your exit module so that it can issue commands or call other programs to update external inventories. You can also code the exit module to module issue a WTOR if needed. Do not issue messages that are contained in the MNTMSG table, or the EDG_EXIT100 installation exit could be called recursively.