Sales invoice

Represents a sales invoice (AR invoice): billing to a customer with internal number, invoice and due dates, customer, optional links to sales order and delivery note (salesOrderId, deliveryNoteId, and human-readable numbers), currency, payment terms, invoiced lines, and totals. Suited to AR flows, e-invoicing downstream mapping, and closing the order–delivery–invoice chain.

Full JSON example

{
  "id": "si_2Uv5Wx8Yz1Ab4",
  "channel": "demoipaas",
  "createdAt": "2026-01-24T10:15:00+00:00",
  "updatedAt": "2026-01-24T10:15:00+00:00",
  "number": "SI-2026-00402",
  "status": "posted",
  "invoiceDate": "2026-01-24",
  "dueDate": "2026-02-23",
  "customerId": "cust_4Fx7Gy0Hz3Ja6",
  "salesOrderId": "so_8Km2Np5Qr8St1",
  "salesOrderNumber": "SO-2026-0118",
  "deliveryNoteId": "dn_7Jk1Lm4No7Pq0",
  "deliveryNoteNumber": "DN-2026-0093",
  "currency": "EUR",
  "paymentTerms": "Net 30",
  "lineItems": [
    {
      "position": 10,
      "itemId": "itm_WIDGET_A",
      "description": "Widget mod. A — conf. 24 pz",
      "quantity": 48,
      "unitPrice": 12.5,
      "taxRate": 22,
      "lineTotal": 600
    }
  ],
  "subtotal": 600,
  "taxTotal": 132,
  "grandTotal": 732,
  "notes": null
}

Remarkable notes

• The sample invoices part of the order (widget line), consistent with a partial delivery note; later invoices can cover other lines or services.
• Some ERPs require split postings or separate handling for deposits—extend mapping as needed.
• Keep customerId and line itemId values aligned with the destination customer and item master data.