The actual delivery date SHOULD be provided in the invoice according to "FOR 2004-12-01 nr 1558 - § 5-1-1. Point 4 and § 5-1-4", see also “NOU 2002:20, point 9.4.1.4”"
ubl:Invoice
$isZ02 or //cac:Delivery/cbc:ActualDeliveryDate