API de facturación CFDI para empresas modernas

var fiscalApi = FiscalApiClient.Create(Settings);

var invoice = new Invoice
{
    VersionCode = "4.0",
    Series = "SDK-F",
    Date = DateTime.Now,
    PaymentFormCode = "01",
    CurrencyCode = "MXN",
    TypeCode = "I",
    ExpeditionZipCode = "42501",
    PaymentMethodCode = "PUE",

    // Emisor
    Issuer = new InvoiceIssuer { Id = "<id>" },

    // Receptor
    Recipient = new InvoiceRecipient { Id = "<id>"},

    // Productos / servicios
    Items = new List<InvoiceItem>
    {
        new InvoiceItem
        {
            Id = "<id>",
            Quantity = 1,
            Discount = 10.85m
        }
    },
};
// Timbrar factura
var apiResponse = await fiscalApi.Invoices.CreateAsync(invoice);