Model credit notes and cancellations correctly

An invoice was wrong or is being reversed, and you need the correct document type.

Steps

  1. 1

    Pick the document type: credit_note for a credit note, correction for a corrected version.

  2. 2

    Include the original invoice number as a reference so the recipient can match it.

  3. 3

    State amounts positively — the document type determines the direction, not the sign.

The call

POST /api/v1/invoice/DE/xrechnung/generate

bash
1curl -X POST https://api.invoice-api.xhub.io/api/v1/invoice/DE/xrechnung/generate \
2  -H "X-API-Key: $INVOICE_API_KEY" \
3  -H "Content-Type: application/json" \
4  -d '{
5  "invoice": {
6    "invoiceNumber": "GS-2025-001",
7    "type": "credit_note",
8    "issueDate": "2025-01-15",
9    "dueDate": "2025-02-15",
10    "currency": "EUR",
11    "seller": {
12      "name": "Muster GmbH",
13      "vatId": "DE811128135",
14      "street": "Musterstraße 1",
15      "postalCode": "10115",
16      "city": "Berlin",
17      "countryCode": "DE",
18      "email": "info@muster.de",
19      "phone": "+49 30 12345678"
20    },
21    "buyer": {
22      "name": "Beispiel AG",
23      "vatId": "DE136695976",
24      "street": "Beispielweg 42",
25      "postalCode": "80331",
26      "city": "München",
27      "countryCode": "DE"
28    },
29    "items": [
30      {
31        "position": 1,
32        "description": "Beratungsleistung",
33        "quantity": 10,
34        "unit": "HUR",
35        "unitPrice": 150,
36        "taxRate": 19,
37        "netAmount": 1500,
38        "taxAmount": 285,
39        "grossAmount": 1785
40      }
41    ],
42    "taxSummary": [
43      {
44        "taxRate": 19,
45        "netAmount": 1500,
46        "taxAmount": 285
47      }
48    ],
49    "subtotal": 1500,
50    "total": 1785,
51    "countrySpecific": {
52      "countryCode": "DE",
53      "leitwegId": "991-12345-67"
54    }
55  }
56}'

Where this goes wrong

Re-sending an invoice with negative amounts is not a credit note. The document type has to be right, otherwise the recipient books it twice.

Error reference

Other recipes