t() :: %AdyenCheckoutEx.Model.AdditionalDataOpenInvoice{
"openinvoicedata.merchantData": String.t() | nil,
"openinvoicedata.numberOfLines": String.t() | nil,
"openinvoicedataLine[itemNr].currencyCode": String.t() | nil,
"openinvoicedataLine[itemNr].description": String.t() | nil,
"openinvoicedataLine[itemNr].itemAmount": String.t() | nil,
"openinvoicedataLine[itemNr].itemId": String.t() | nil,
"openinvoicedataLine[itemNr].itemVatAmount": String.t() | nil,
"openinvoicedataLine[itemNr].itemVatPercentage": String.t() | nil,
"openinvoicedataLine[itemNr].numberOfItems": String.t() | nil,
"openinvoicedataLine[itemNr].returnShippingCompany": String.t() | nil,
"openinvoicedataLine[itemNr].returnTrackingNumber": String.t() | nil,
"openinvoicedataLine[itemNr].returnTrackingUri": String.t() | nil,
"openinvoicedataLine[itemNr].shippingCompany": String.t() | nil,
"openinvoicedataLine[itemNr].shippingMethod": String.t() | nil,
"openinvoicedataLine[itemNr].trackingNumber": String.t() | nil,
"openinvoicedataLine[itemNr].trackingUri": String.t() | nil,
"openinvoicedataLine[itemNr].vatCategory": String.t() | nil
}