STPOFLOW, String pool space overflow
Run Time Fatal: This indicates that the process has previously exceeded the heap (string pool) limit specified in the $ZSTRPLLIM ISV and still needs more memory, so GTM terminates the process.
Action: Investigate whether the process memory usage is appropriate, and if so, increase or remove the limit. Otherwise correct the cause(s) of the excessive memory consumption. Please see the documentation for $ZSTRPLLIM for additional information.