> >Mark - I notice that you have AC set to 0, wherein on our linkedit
> program
> 
> >identified in the USEREXIT paramter of MPFLSTxx is set to 1.
> 
> For grins I added AC=1 to my linkedit.  No difference.

Nooooooooooooooooo. All that AC=1 does is tell the initiator that the
program is eligible to be run as an APF-authorized the job step.

If the program is not expected to be run as an APF authorized job step
then it should not <ever> have AC=1 set. That's considered an integrity
exposure.

Exits need to be reentrant and loaded from an APF authorized library
because that indicates they are under installation control. The
combination of RENT and APF library gets them loaded into key zero
storage so they are not subject to tampering after being loaded. 

CC

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