We converted to z/OS 2.1 this past weekend. Since then, we are seeing message 
ISF121I Module IDFSM64 was unable to obtain xxxxxxxx_xxxxxxxx bytes of storage 
(1 segment). Check MEMLIMIT value. 

The only "MEMLIMIT" value we can find is in SMFPRMxx, and that is already set 
to 1M as suggested in the documentation. It seems the MEMLIMIT would have no 
effect since a TSO user always has a REGION specified when they sign on. The 
funny thing is that the systems programmers do not seem to get this message.

Has anybody run into this and what was the solution?

Thanks,
Neal

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