VSMPMEM

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            .-DFSVSM00-.   
>>-VSMPMEM=-+-member---+---------------------------------------><

VSMPMEM
If the data set specified in the DFSVSAMP parameter is a PDS or PDSE, VSMPMEM specifies the member of that data set which contains the parameters defining the IMS™ buffer subpools for OSAM and VSAM data sets.

The specified member is allocated to the DFSVSAMP DD when ZDT/IMS functions are run in DLI mode.

This parameter is optional. If it is not specified on the HFM1POPI macro statement and the data set specified in the DFSVSAMP parameter is a PDS or a PDSE, ZDT/IMS uses either the value specified on the HFM1POPD macro statement (if specified on that statement), or DFSVSM00 (otherwise).

If you do not want the user to override the value you specify for this parameter, set UDFSVSMP=N.