We are in an R & D environment ie manufacturing is sourced we will only be assembling the subs and rolling the subs up to the main assy. The end product is solar industry capital equipment. When the BOM was released to SAP Friday I noticed there are kits on the main assy BOM. I've worked in 3 other similiar planning positions using SAP and kits were not used like this. Can someone in very simple terms give me reasons why using kits in a production bom is not a good business practice?