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API Reference

List credit notes

List all credit notes issued for an invoice. --- **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}/margin-estimate` — Estimate invoice net by payment rail - `POST /invoices/{id}/refund` — Refund invoice **Common errors** - `404 resource_missing` — the referenced resource does not exist or is not visible to your key. **Pagination** Offset-based with `limit` (default 25, max 100) and `offset`. The response `pagination` block includes `total` and `hasMore`. See [the pagination guide](/docs/fundamentals/pagination) for SDK auto-paging helpers.

GET
/invoices/{id}/credit-notes

List all credit notes issued for an invoice.

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}/margin-estimate — Estimate invoice net by payment rail
  • POST /invoices/{id}/refund — Refund invoice

Common errors

  • 404 resource_missing — the referenced resource does not exist or is not visible to your key.

Pagination

Offset-based with limit (default 25, max 100) and offset. The response pagination block includes total and hasMore. See the pagination guide for SDK auto-paging helpers.

Authorization

x-api-key<token>

Your RevKeen merchant API key. Create and manage keys in Dashboard → Settings → Developer. Use rk_sandbox_* for staging/test and rk_live_* for production. The same key may be sent as Authorization: Bearer <key> if that suits your HTTP client better. A missing, invalid, expired, or revoked key returns 401 with a WWW-Authenticate: Bearer challenge; a valid key without the required scope returns 403.

In: header

Path Parameters

id*string
Formatuuid

Response Body

application/json

application/json

application/json

application/json

Stuck on an error response? Ask the RevKeen assistant to explain it.
curl "https://api.revkeen.com/v2/invoices/00000000-0000-0000-0000-000000000000/credit-notes" \
  -H "x-api-key: $REVKEEN_API_KEY"
{  "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": "2019-08-24T14:15:22Z",      "created_at": "2019-08-24T14:15:22Z",      "updated_at": "2019-08-24T14:15:22Z"    }  ],  "requestId": "string"}

Issue credit note POST

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}/margin-estimate` — Estimate invoice net by payment rail - `POST /invoices/{id}/refund` — Refund 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](/docs/fundamentals/idempotency).

Delete invoice DELETE

Delete an invoice. --- **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 - `POST /invoices/{id}/margin-estimate` — Estimate invoice net by payment rail - `POST /invoices/{id}/refund` — Refund invoice - `POST /invoices/{id}/reject` — Reject invoice **Idempotency** Pass an `Idempotency-Key` header (UUID v4 recommended) to make retries safe. Keys are valid for 24 hours; see [the idempotency guide](/docs/fundamentals/idempotency).