Allow Change of Private Supplier While Costing - System Option

>Utilities>System Options>Inventory>Costing/Receiving

Category Configuration

Type is Assigned, User or Global

This system option was added in version 12.1 (Spring 2013) and will be helpful to track rebates by a buying group.   Create the buying group as a private supplier.  During costing select F8 and bring in the Private supplier. The Item Range and Roll Range report are two of the reports that can be run by Private Supplier giving the invoice number and amount.