Currency conversion during the creation of a Purchase Order

Summary:

Dear Oracle forum experts,

I have a question regarding currency conversion during the creation of a Purchase Order (PO) using the requisition process.

I have noticed that when I initiate a PO through the requisition process and reach the stage just before clicking on the create in edit mode button (prior to the system generating the PO number), the currency conversion is executed automatically.

see screenshots

PR - in US currency

However, after clicking on the "create" button and a PO order number is generated when I attempt to change the currency or the supplier's site, the system prompts me to perform a manual conversion, even though there is a supplier site connected with a specific currency.