Use
Third-party subcontracting allows you to order a material in subcontracting, and at the same time, have an external vendor provide the components. When you procure materials using third-party subcontracting, you order the components from an external vendor and enter the subcontractor’s address as the delivery address. Upon goods receipt of the components, they will be directly posted to the SC stock.

Features
To order components from external vendors, take the following steps:
If the delivery of the components will be reported, enter the goods receipt for the purchase order. The components will be directly posted to the SC stock.