Purchase orders

It would be great if the system didn’t DUPLICATE PURCHASES ORDERS once you created it for a client. This seem to be such an important feature to have. It would be so nice if you created them they the system would say “ this order has already been created” it is really difficult if you have 40 items on one purchase order to know if it was ordered yet or not…. Please this is so important to not be able duplicate purchase orders. Thanks please vote yes!