Return Purchase Order Process - Partial Shipment

Hii Expert,

I have created one Return Purchase Order.

In Purchase Order line there is 10 Qty.
I returned 6 (Partial Quantity) Quantity to Supplier(Shipment done for 6 Qty).
Now, I want to ship full Quantity to Supplier.
I also have confirmed 4 Qty from "Potential Back Order Line" Session.

So now my Question is,
How can i transfer that pending Qty to supplier?
I tried to make direct shipment from Shipment Session. But it give me an error - "Ship to Business Partner not Active".

Best Regards,
DDPatel