Restrict Select-Options for Logical Database field

The way we restrict select options for custom defined select option fields on selection screen.. can we restrict select options for standard Logical Database fields?
i.e. report uses PNPCE logical database and has field called PERNR. I want to restrict select options for this PERNR field so that it has options for 'Select single values' only.
Thanks,
Falguni
Edited by: Falguni V on Nov 13, 2010 6:42 AM

You can user AT SELECTION-SCREEN event, and check whether any record is having high value for PNPPERNR.

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