Bill of Material (BOM)

The bill of material is a list of raw materials, parts, components or sub-assemblies needed to compose or manufacture a final assembly. All items are described with name, part number, and amount and are ordered following the assembly structure. During the development process, the bill of material (engineering bill of material) is a living document and updated following a milestone or change management process. During production, the bill of material (manufacturing bill of material) is a frozen document, wherein the change management has an extended workflow to validate each change.