Allowing a PO to amended once approved and have it re-route through the approval process will prevent duplication, save time cancelling and re-raising, and also allow for changes in prices during the purchasing process to be amended, rather than raising additional POs to cover invoices.
Hi Charlotte. Thank you for the suggestion. We can see why this would be useful, but it's a big change to the way the Purchasing system works. If we do decide to implement this, it will be quite a way in the future during a major release.