IBM Mainframe Forum

Lots of interesting ideas here, but the basic problem is it worked fine until I reassembled and relinked the driver module, with no changes, into the same library. The difference has to be in that it was originally linked as authorized, which I don't recall how to do. I don't have any support to work with. This is a new job for me, it's a small shop and I'm trying to get the environment to work.

There are other issues that you gentlemen have observed. But, I need to address why that mainline is not working after I reassemble it, first.

I tend to trust more the zOS messages than the poster judgement
we base our answers on facts, not impressions
the messages You posted are facts the rest are irrelevant considerations

the module name READ/TRA is ... garbage
find out if somewhere in Your program there is that sequence of chars

the usual way to debug these things is to see what messages You get when You know
that You are doing something wrong
change for example the name of the module and see what happens...

if You get the same message, bingo... Your addresses/registers are clobbered

for actions related to the IDIXDCAP, Your support has to be involved

You were absolutely right, Enrico! Thank you so much!
There was a discrepancy in the source code between the program that worked and what I was assembling. I didn't see a line that was commented out.

I should add that the RACF error was occurring because I don't have authority to use Fault Analyzer. The environment is very incomplete and under construction, so error messages are common.

glad to know that the issue was solved !