Compared to PO and Stock Transfer Order which is the better option in case one company with a plant and another company with a sales organization?

In order to select one company with a plant and another company with a sales organization it has to considered the following conditions it has to configure using transaction OMGN, depending upon the sending and receiving plants, maintain sales organization and customer data in customizing, maintain the supplying plant as a vendor and attach the plant to the vendor in the Vendor Master, Material type has to be HALB or HAWA, Ensure that the company with sales organization has a plant to take care of stocking, The PO used in NB and not Stock Transfer PO, Configure SD for inter company billing to enable picking up the pricing procedure for billing, and Carry out delivery through process delivery due list and billing through process billing due list.