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API Reference

Void a credit note

Void a credit note that has been issued but not yet fully applied. This is an accounting void — it reverses the credit without creating a new financial transaction. --- **Related endpoints** - `GET /credit_notes` — List credit notes - `POST /credit_notes` — Create a credit note - `GET /credit_notes/{id}` — Get credit note by ID - `GET /credit_notes/invoice/{invoice_id}/eligibility` — Check credit note eligibility for an invoice - `GET /credit_notes/transaction/{transaction_id}/reversal-eligibility` — Check reversal eligibility for a transaction - `GET /credit_notes/{id}/lines` — List line items on a credit note - `POST /credit_notes/preview` — Preview a credit note without creating it **Common errors** - `400 invalid_request` — malformed payload or failed validation. - `401 authentication_error` — missing, invalid, expired, or revoked credential. Codes: `authentication_failed`, `invalid_api_key`, `expired_api_key`, `api_key_revoked`, `session_invalid`, `merchant_required`. Carries a `WWW-Authenticate: Bearer` challenge. - `404 resource_missing` — the referenced resource does not exist or is not visible to your key. **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).

POST
/credit_notes/{id}/void

Void a credit note that has been issued but not yet fully applied. This is an accounting void — it reverses the credit without creating a new financial transaction.

Related endpoints

  • GET /credit_notes — List credit notes
  • POST /credit_notes — Create a credit note
  • GET /credit_notes/{id} — Get credit note by ID
  • GET /credit_notes/invoice/{invoice_id}/eligibility — Check credit note eligibility for an invoice
  • GET /credit_notes/transaction/{transaction_id}/reversal-eligibility — Check reversal eligibility for a transaction
  • GET /credit_notes/{id}/lines — List line items on a credit note
  • POST /credit_notes/preview — Preview a credit note without creating it

Common errors

  • 400 invalid_request — malformed payload or failed validation.
  • 401 authentication_error — missing, invalid, expired, or revoked credential. Codes: authentication_failed, invalid_api_key, expired_api_key, api_key_revoked, session_invalid, merchant_required. Carries a WWW-Authenticate: Bearer challenge.
  • 404 resource_missing — the referenced resource does not exist or is not visible to your key.

Idempotency

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

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

Credit note UUID

Formatuuid

Response Body

application/json

application/json

application/json

application/json

application/json

application/json

Stuck on an error response? Ask the RevKeen assistant to explain it.
curl -X POST "https://api.revkeen.com/v2/credit_notes/00000000-0000-0000-0000-000000000000/void" \
  -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"  }}

Check reversal eligibility for a transaction GET

Returns available reversal operations for a specific payment transaction, including terminal-specific options and NMI fallback paths. For terminal (card-present) transactions, pass `customer_present=true` to see terminal-native operations. --- **Related endpoints** - `GET /credit_notes` — List credit notes - `POST /credit_notes` — Create a credit note - `GET /credit_notes/{id}` — Get credit note by ID - `POST /credit_notes/{id}/void` — Void a credit note - `GET /credit_notes/invoice/{invoice_id}/eligibility` — Check credit note eligibility for an invoice - `GET /credit_notes/{id}/lines` — List line items on a credit note - `POST /credit_notes/preview` — Preview a credit note without creating it **Common errors** - `401 authentication_error` — missing, invalid, expired, or revoked credential. Codes: `authentication_failed`, `invalid_api_key`, `expired_api_key`, `api_key_revoked`, `session_invalid`, `merchant_required`. Carries a `WWW-Authenticate: Bearer` challenge. - `404 resource_missing` — the referenced resource does not exist or is not visible to your key.

Retrieve a customer-meter aggregate GET

Returns a single customer-meter aggregate for the specified customer + meter pair. Returns 404 only if the meter itself does not exist on the merchant — if the meter exists but the customer has zero events, the response returns an aggregate with `total_quantity: 0`, `event_count: 0`, `last_event_at: null`. --- **Related endpoints** - `GET /customer-meters` — List a customer's meter usage **Common errors** - `401 authentication_error` — missing, invalid, expired, or revoked credential. Codes: `authentication_failed`, `invalid_api_key`, `expired_api_key`, `api_key_revoked`, `session_invalid`, `merchant_required`. Carries a `WWW-Authenticate: Bearer` challenge. - `404 resource_missing` — the referenced resource does not exist or is not visible to your key.