Message does not pop-up while adding fund to PO

In Autocreate queue whenever a buyer convert a foreign currency Requisition to Purchase Order, application pop-up a message saying "You are using a foreign Currency. please verify price information. "

However same message did not appear when buyer tries adding funds on existing foreign currency PO by selecting action as Action "Add to".

Please let us know if there is any configuration can be done to trigger the same message when they try to add the funds on existing PO.

Thanks

Ammu