The PTC FlexPLM BOM object exists on the product object and also on materials. It cannot be created independently of the product. It can be copied to other products, linked from other products, and shared by many seasons, sources, or specifications within a single product.

The BOM can be created both as part of a specification, or independently of a specification. BOMs can also be exported; however, if you want to export a BOM as part of a specification, you must first add it to that specification.