[IBR-084-OM] - If invoice transaction type (BTOM-001) is 'Import of Goods' (XXXXXXXXXXXX1XXXXXXX) then Item country of origin (IBT-159) is mandatory.
IBR-084-OMcac:InvoiceLine | cac:CreditNoteLinenot($isImportGoods) or cac:Item/cac:OriginCountry/cbc:IdentificationCode