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Specifies whether or not the user can override the data set specified in the DFSVSAMP parameter and the member specified in the VSMPMEM parameter.
The user can override the DFSVSAMP and VSMPMEM parameters.
The user cannot override the DFSVSAMP and VSMPMEM parameters.
If you specify UDFSVSMP=N:
  • The DFSVSAMP Data set name and Member fields on the DLI Mode Data Sets 1 panel are protected.
  • DFSVSAMP= and VSMPMEM= statements in the HFMIMSIN input of batch jobs are ignored.
  • No DFSVSAMP= and VSMPMEM statements are included in the JCL generated by ZDT/IMS dialogs.

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 Y (otherwise).