BOM: Purchase UoM different from Inventory UoM

Hi guys,

I hope you could help me out on this one.

I am making a BOM wherein component items UoM are maintained differently in purchasing and inventory under item master data, kilo and bag respectively, 1 bag contains 25 kilos. So that when I purchase the item, purchase cost will be based on the purchasing UoM which is in kilo. When I make BOM and tag that particular item as component item, UoM that will be carried will be in bag as per inventory UoM, however, unit price is based on the purchasing UoM.

Where could I setup in SAP B1 wherein item costs will automatically convert depending on what UoM is used? So that if 1 kilo = 10, then 1 bag = 250 and vice versa.

Thanks in advance guys.

blake p.