Hi,
We have found the better solution.
Which we will create an intercompany order in company A with delivery plant from company B.
STO will be trigger to company C to send goods to company B.
After STO process completed, then we are able to create delivery from company B to end customer.
This is system flow.
However, for the actual goods movement, it will be ship directly from company C to end customer with supporting document from system.
I'll close this topic.