---
title: "Idempotency key reused"
description: "The Idempotency-Key was already used for a different request (another path, query, workspace or body). Use a new key."
---

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# Idempotency key reused

The API answered with HTTP 422 and the error code `idempotency_key_reused`.

The Idempotency-Key was already used for a different request (another path, query, workspace or body). Use a new key.

Every error is an [RFC 9457](https://www.rfc-editor.org/rfc/rfc9457) problem document (`application/problem+json`). Match on `code`, never on the message text. See [errors](/docs/api/errors) for the full list.

Source: https://tarkle.com/docs/api/errors/idempotency_key_reused/index.mdx