Subcontracting diagram
The following diagram shows the movements of the subassemblies in case operations 20 and 30 are subcontracted.
| WH | Warehouse |
| 1 | The subassembly produced in operation 10 is completed and received in the shop floor warehouse. |
| 2 | The subassembly is transferred to a warehouse for subassemblies. |
| 3 | The subassembly is delivered to the subcontractor without ownership change. In the manufacturer's system, the subassembly is registered as stored in an administrative warehouse. |
| 4 | The subassembly produced by the subcontractor in operation 30 is received in the warehouse at the manufacturer's location. |
| 5 | The subassembly is transferred to work center WC4. |
| 6 | The subassembly is issued to production and consumed in operation 40. |