Yeah, I need to send this to one of my vendors. We send them an order number, and they send us back an order key from their system. However, we can only look up

Yeah, I need to send this to one of my vendors. We send them an order number, and they send us back an order key from their system. However, we can only look up an order by that key, and they will happily accept and process duplicate order numbers. Therefore, if for whatever reason we don't receive a key during the order submission process, we have no way to look up the order afterwards by order number to see if it went through and what the key is. They don't seem to understand why that is bad.