We use Sage 50Cloud Accounts Professional and update Purchase Orders to become Invoices in our Purchase Ledger accounts. We often make returns after the invoice has been updated but there is no way to post the credit note against the PO so when we receive a further invoice for the replacement items, it looks like the order is already complete as there are no items to update. It would be good to post the credit through Purchase Orders, as we do with invoices, so it puts the items back into the outstanding column.