Getting all raw materials for producing an finishied goods(Composit items).
Receives against purchase order is available but issues against stock is not available .
In Manufacturing we give issue of material during production and get back as finished goods and invoice for the Finished products.

While we create an sales order for an finished goods , all the items in the composite item has to be hold from the stock and show us the balance stock as stock on hold and remaining stock separate.

BOM (Bill of materials is needed).