How to retrieve product categories assigned to a purchasing group

Hi All,

I have a requirement where I want to retrieve all the product categories assigned to a particular purchasing group.

I know other way of retrieval, i.e., retrieving responsible purchasing group for a particular product category. We have an FM BBP_OM_DETERMINE_RESP_PGRP for that but is not helping in this scenario.

Please help as it is required urgently.

Thanks

Siddarth