Hi expert,
Our company uses Business ByDesign. In our Purchase Order Approval Process, we only set up local currency amount thresholds for different approval steps(levels). But in our business, many of our suppliers use foreign currencies. Recently, I found in our approval records with foreign currencies, ByDesign seems to ignore the currency, which may skip the approval processes that the POs should have. I don't know if my understanding is correct.
In our configuration of Currency Conversion Profile, there is one for creating PO, which uses the exchange rate in posting date. Does that mean the system converts the foreign currency to local currency in approval processes to judge if the PO amount exceeds the approval thresholds? If yes, when is the date for the exchange? Here we choose "Posting Date", is that correct? Should it be "Document Date"?
Thank you if you can explain the logics of catching exchange rates when we only set up local currency approval thresholds.

Best regards
Linda Zhang