WLM stored procedure address space abending -471

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WLM stored procedure address space abending -471
We have had a few nested stored procedures fail with SQLCODE 471 rc

This means that the nested stored procedure could not get scheduled to be
run in another WLM address space.
All the DB2 recommended fixes are on. The only MVS fix not on is

I know that you can nest up to 16 nested calls but we aren't at that limit
yet so am wondering if anyone else has experienced this.

Is there some way to confirm that this fix is needed?
Is this a known problem that is starting to show up at other shops?

We're on DB2 V6 OS/390 2.10

Any help is appreciated

Shan Leatherman

disclaimer: al thoughts are mine and not of my company