while reversing a sales invoice, NAV checks whether it's allowed or not. Some parts are tested by CU 1303 function TestSalesLines. There, the presence of a sales order number in the to the invoice corresponding delivery note is checked:
IF SalesShipmentLine.GET(SalesInvoiceLine."Shipment No.",SalesInvoiceLine."Shipment Line No.") THEN BEGIN
IF SalesShipmentLine."Order No." <> '' THEN
The sales order is deleted by now (as every posted sales order). Why is NAV checking the sales order number within the delivery note? How can I reverse this invoice (without creating a credit memo manually)?
Help is appreciated!