OptionaladditionalOptionalappearanceDefaults to PAPER.
OptionalcurrencyISO 4217. Defaults to HUF.
OptionalvatStatus?: "OTHER" | "DOMESTIC" | "PRIVATE_PERSON"Defaults to DOMESTIC when a tax number is given, else PRIVATE_PERSON.
OptionaldeliveryFulfilment date, yyyy-mm-dd. Defaults to the issue date.
OptionaldeliveryPeriodic (continuous) settlement — "folyamatos teljesítés". Sets the
delivery period on the invoice and marks periodicalSettlement.
OptionalexchangeRate to HUF. Required for a non-HUF invoice; defaults to 1.
Issue date, yyyy-mm-dd.
OptionalorderOrder numbers — "rendelésszám(ok)" (conventionalInvoiceInfo.orderNumbers).
OptionalpaymentPayment due date, yyyy-mm-dd.
OptionalpaymentOptionalpriceHow each line's unitPrice is entered. net (the default) takes it as the
net unit price. gross takes it as the gross (VAT-inclusive) unit price and
derives the net one from the line's VAT rate — the common "bruttó árból"
data-entry mode. Because NAV is net-based, the reported gross line total may
differ from quantity × grossUnitPrice by a rounding unit.
Conventionally named extra data for the invoice (
additionalInvoiceData). NAV has no free-text invoice note; an invoice-level "Megjegyzés" must be a structured field whosedataNamefollows NAV's[A-Z][0-9]{5}_...convention. Validated byvalidateInvoice.