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Specifies the name of the IMS™ PROCLIB data set that contains the required DFSDFxxx member (see DFSDF). The specified data set is allocated to the PROCLIB DD when a ZDT/IMS function is run in DLI mode and IMS manages the ACBs (ACBMGMT=CATALOG).

This parameter is optional. If it is not specified on the HFM1POPI macro statement, ZDT/IMS uses either the value specified on the HFM1POPD macro statement (if specified on that statement), or IMS.PROCLIB (otherwise).

The user cannot override the value you specify for this parameter.