[IBR-085-OM] - If invoice transaction type (BTOM-001) is 'Import of Goods' (XXXXXXXXXXXX1XXXXXXX), then Import date (BTOM-030), Custom Declaration number (BTOM-021) and Incoterms (BTOM-022).MUST be present.
IBR-085-OMubl:Invoice | cn:CreditNote not($isImportGoods) or ( cac:Delivery/cac:Shipment/cac:Delivery/cbc:ActualDeliveryDate and cac:Delivery/cac:Shipment/cbc:ID and cac:Delivery/cac:DeliveryTerms/cbc:ID )