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

# idempotency_conflict

> HTTP 409 — Idempotency key reused with a different payload.

## HTTP status

`409 invalid_request_error`

## Typical cause

The `Idempotency-Key` header matches a prior request but the payload differs from what was originally submitted.

## Resolution

Either reuse the exact original payload or pick a new idempotency key.