# idempotency_conflict

> Noptcha API error idempotency_conflict (HTTP 409): what it means and what to do.

Source: https://noptcha.com/docs/errors/idempotency_conflict/

HTTP **409**, `application/problem+json`. When: same `Idempotency-Key` with another body, or still in progress.

## What to do

The `Idempotency-Key` was already used with a different request body, or the first request with this key is still being admitted. In the second case retry shortly; in the first, use a new key.

See all codes on [Errors](https://noptcha.com/docs/errors.md). Include the `request_id` when you contact support.