# idempotency_key_reused

The Idempotency-Key was already used for a different request.

## What happened

The same key with the same body again returns the first answer and never starts a second run. The same key with a different body is refused with 422, because the key can stand for only one request.

## What to do

Use a new key for a new request. To repeat the first request, send it with its own body unchanged.

## Example

```json
{
  "error": {
    "code": "idempotency_key_reused",
    "message": "This Idempotency-Key was already used for a different request. Use a new key.",
    "detail": {
      "request_id": "3c6f9a52-8e1d-4b7a-9f20-6d41a8c5e7b3"
    }
  }
}
```