Issue credit note

Issue a credit note for a paid or partially paid invoice. Use this instead of void for invoices that have received payment.

Related endpoints

• PUT /invoices/external/batch — Batch upsert invoices by external ID
• GET /invoices — List invoices
• POST /invoices — Create invoice
• GET /invoices/{id} — Get invoice
• PATCH /invoices/{id} — Update invoice
• DELETE /invoices/{id} — Delete invoice
• POST /invoices/{id}/refund — Refund invoice
• POST /invoices/{id}/reject — Reject invoice

Common errors

• 400 invalid_request — malformed payload or failed validation.
• 404 resource_missing — the referenced resource does not exist or is not visible to your key.
• 409 conflict — Idempotency-Key collision with a different body, or a concurrent state-transition conflict.

Idempotency

Pass an Idempotency-Key header (UUID v4 recommended) to make retries safe. Keys are valid for 24 hours; see the idempotency guide.

curl -X POST "https://api.revkeen.com/v2/invoices/00000000-0000-0000-0000-000000000000/credit-note" \  -H "x-api-key: $REVKEEN_API_KEY" \  -H "Content-Type: application/json" \  -d '{    "amount_minor": 5000,    "reason": "Service issue - partial refund for outage"  }'

{
  "data": {
    "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
    "credit_note_number": "string",
    "invoice_id": "f4c4edb8-11e0-4b33-bcc1-482dc59ebb32",
    "customer_id": "160c0c4b-9966-4dc1-a916-8407eb10d74e",
    "amount_minor": 0,
    "tax_amount_minor": 0,
    "currency": "string",
    "status": "string",
    "reason": "string",
    "reason_code": "string",
    "credit_method": "string",
    "pdf_url": "string",
    "issued_at": "string",
    "created_at": "string",
    "updated_at": "string"
  },
  "requestId": "string"
}