Victoria Yudin has a new SQL view for Payables invoices originating from POP in Dynamics GP up on her website
SQL view for Payables invoices originating from POP in Dynamics GP
SQL & DataPayables & ReceivablesSales, Purchasing & Inventory
Archived post from 2010. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.