> ## Documentation Index
> Fetch the complete documentation index at: https://docs.antarah.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# idempotency_conflict

> Idempotency key conflict (HTTP 409)

| | |
| - | - |
| HTTP status | `409` |
| OpenAI `type` | `invalid_request_error` |
| Anthropic `type` | `invalid_request_error` |
| Retry | No. Error responses carry `x-should-retry: false`. |

## What it means

This `Idempotency-Key` was already used for a different request (another body, path, or caller).

## What to do

Use a new key for a new request. See [Idempotency](https://docs.antarah.dev/guides/idempotency.md).


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