{
  "invoice_kind": "B2G",
  "invoice_type": "invoice",
  "document_number": "INV-2026-GOV-001",
  "issue_date": "2026-04-25",
  "due_date": "2026-05-25",
  "document_currency": "NGN",
  "tax_currency": "NGN",
  "customer": {
    "name": "Federal Ministry of Finance",
    "tin": "87654321-0001",
    "email": "procurement@mof.gov.ng",
    "phone": "+2348012345678",
    "address": "Adeola Odeku Street",
    "city": "Abuja",
    "state": "NG-FC",
    "lga": "NG-FC-AMC",
    "country": "NG",
    "postal_code": "900001"
  },
  "lines": [
    {
      "item": {
        "name": "Laptop computer",
        "description": "Portable computer for office use",
        "sellers_item_identification": "LAPTOP-8517"
      },
      "quantity": 1,
      "unit_price": 50000,
      "hsn_code": "8517.11",
      "category": "Computers and electronic equipment",
      "tax_scheme": "STANDARD_VAT",
      "tax_rate": 7.5,
      "unit_of_measure": "Each"
    },
    {
      "item": {
        "name": "Information technology consulting",
        "description": "Professional information technology consulting",
        "sellers_item_identification": "CONSULTING-6202"
      },
      "quantity": 1,
      "unit_price": 25000,
      "isic_code": "6202",
      "category": "Information technology consulting services",
      "tax_scheme": "STANDARD_VAT",
      "tax_rate": 7.5,
      "unit_of_measure": "Each"
    }
  ],
  "note": "Government contract delivery",
  "po_reference": "PO-GOV-4421"
}