Representing component items
You can use materials as the interface between the routings of two or more orders. For example, you can separate an order for a finished item into orders for one or more component items and an order for the finished item. To do this, you must create a material to represent each component item, then define a routing to create each type of component item.
The component item routing adds to its component item material as the component items are completed. The routing for the finished item removes from the component item materials as necessary to make the finished item. If the finished item routing needs any component item material that is not currently available, it waits until the material becomes available.