In order to roll up costs correctly for manufactured items, the Purchase/Manufacture code must be set to M (Manufactured), L (Repetitive line), W (Flow), or R (Routable).

If the Purchase/Manufacture code for a manufactured item is incorrectly set to P (Purchased) or D (DRP), all lower-level costs for material, labor, burden, overhead, and subcontract are set to zero. This occurs even when routing and product-structure cost rollups were performed. Additionally, this-level costs for labor and burden are zeroed out.