Our business (freight forwarding) would really benefit from being able to set tolerance per order reference instead of only per line or head, since in MANY cases the number of invoices lines are not equal to number of PO lines. If the invoices only refers to one order it can be connected on head level - but in all cases where there are multiple references on the invoice we have a problem. And if matching those on head level, deviation has to be approved by ONE user even though it should have been several.