Bill of materials (BOM)

The BOM is the recipe — every component, its quantity, and its unit — needed to make one unit of a product. It’s the foundation the work order explodes into a material list, and it can also carry a routing of operations.

When to use

Use the BOM before the first work order for any product, and again whenever the recipe or the production steps change.

Before you start

Permissions: manufacturing:read to view, manufacturing:write to create or edit, manufacturing:delete to delete a BOM.
Access: Manufacturing is a beta add-on (manufacturing_addon); there are no app-specific feature toggles.
Make sure the product and each component exist in Inventory, with their stock units set.

Steps

Create a BOM

Go to Manufacturing → BOM → New BOM (/manufacturing/bom) and select the product being made.

Add components with UOM

Add each raw-material or semi-finished component with its quantity and unit of measure. The conversion factor to the base stock unit is captured per line.

Define the routing

Open the BOM (/manufacturing/bom/[id]) and add the operations: work center, setup time, run time, and whether the step is a quality check.

Save and reuse

Save the BOM; it’s reused whenever a work order is created for that product, ensuring consistent material demand. If a workflow applies to BOM changes, the edit goes through approval first.

Manufacturing — Bill of materials editor with components and UOM

Tips & common mistakes

Pick the BOM line unit you actually count in; the conversion to the stock unit is handled per line.
Complete the routing before creating work orders, because operations are copied into each new order.
Changing a BOM does not rewrite work orders that were already created.
Delete a BOM only when no longer needed; check the product has no open orders first.

Overview Work orders & material consumption