# idempotency_conflict

> This Idempotency-Key was already used with a different request body.

Source: https://tickwire.io/docs/errors/idempotency_conflict/

HTTP 409. Nothing reached the broker.

**Likely cause:** A key was reused for a new request.

**What to do:** Use a new key for a new request; the earlier one stands.

**Retry:** No. The same request gets the same answer; change something first.

Listed under [Orders and idempotency](https://tickwire.io/docs/errors/#orders-and-idempotency) in [Errors](https://tickwire.io/docs/errors/). Send the error's `requestId` to support and we can find the request.