At the bottom of this tab, you will see a list containing purchase orders that have been arrival reported for this supplier, as well as the order amount including VAT that each order contains. By selecting each order row, you can link it to the invoice. At the very bottom you will see a total of the order amount for the purchase orders that have been linked in the list.
Please note. Orders that have arrived but have not yet passed through the receiving inspection, will be shown in red font in the list. The text Receiving inspection is also highlighted in red in the lower right corner of the window. If you select such a purchase order, you can only Preliminary link it.