{
  "endpoint": "issueInvoice",
  "description": "Zwei Steuersätze auf einer Rechnung",
  "request": {
    "idempotencyKey": "ex-4",
    "customerId": "customer_example",
    "taxScheme": "normal",
    "priceMode": "net",
    "serviceStart": "2026-09-14",
    "items": [
      {
        "description": "Beratung",
        "quantity": 1,
        "unitPriceCents": 10000,
        "vatRate": 20
      },
      {
        "description": "Buch",
        "quantity": 1,
        "unitPriceCents": 5000,
        "vatRate": 10
      }
    ]
  },
  "expected": {
    "ok": true,
    "totals": {
      "netCents": 15000,
      "vatCents": 2500,
      "grossCents": 17500
    }
  }
}