BOM (Bill of Materials)
The list of components needed to make a manufactured item — production BOMs, assembly BOMs, and formula BOMs.
A bill of materials (BOM) is the list of components, sub-assemblies, and raw materials needed to make a manufactured item. In Dynamics 365 it appears in three flavours: production BOMs (in Business Central Premium and Supply Chain Management — used for discrete manufacturing, with versioning and certification), assembly BOMs (in Business Central Essentials — simpler, single-level, for kitting and light assembly), and formulas (in Dynamics 365 Supply Chain Management — for process manufacturing with proportional ingredients, scaling, yields, and co-products / by-products). BOMs are paired with routings that describe the operations needed; together they drive MRP (planning) and production order execution.