System picking up same PO while transferring the cost item in Shipment Cost Document

Hello Experts

While creating Shipment cost document when I select the transfer option for the shipment cost item system picks the same Purchase order.

I have a requirement to always create a new Purchase order instead of picking the open PO. Could you please suggest what settings would be require to achieve this. I look forward to your valuable inputs.

Regards,

J K Tharwani