PCB status GE after reload - data is there in DB tool

After a DB unload/reload in QA, program gets GE on a GU that worked yesterday. Same key. Same PSB name. I can see the segment in the database tool.

Suspect ACB or procseq but I have stared too long. Fresh eyes?

Confirm the ACB library the region is actually using. We have been burned by a steplib order pointing at yesterday's ACBLIB. Also check secondary index / procseq if the call path changed.

Wrong ACBLIB concatenation. Classic. Fixed.