DS strategy - consider dynamic pegging for specific ATP catogories

Dear SAP Gurus,

Is it possible to make the DS consider the dynamic pegging as a constraint but just for some specific ATP categories and for a specific heuristic? We need to make DS consider the dynamic pegging relationship just when the pegging relationship is between a planned order (or manufacturing order) and the specific order reservation for component, ignoring all other pegging relationships. Is there any BADI or user exit to help on this issue?

Thanks and BR

Mauricio