We have certain customers that once they receive a quote, and are ready to place an order, they provide us a PO number. For billing purposes and general info, it would be awesome if we could go back into the order, and add a PO number to the job, in the correct job PO location. Right now, that is not something we are able to do.

Now we can add them into the notes, but it does not show up on the invoice once it is sent.