A multiple BOM groups together several BOMs, which describe different, alternative material compositions for one and the same product.

For multiple BOMs, you must specify which alternative BOM should be selected by the system during the planning run.

You have determined the procedure to be used for selection for an assembly in the material master (MRP 4 view) in the Selection method field.

Three procedures for selection are supported by the system:

• Selection using order quantity (lot size)
• Selection using explosion date
• Selection using production version