# not_found

> Noptcha API error not_found (HTTP 404): what it means and what to do.

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

HTTP **404**, `application/problem+json`. When: unknown endpoint or method; unknown, expired or foreign task; expired idempotent task.

## What to do

The task does not exist, has expired (results are kept for 10 minutes after completion), or belongs to another organization; or the path or method does not exist (we return 404, not 405). A replay of an `Idempotency-Key` whose task has expired is also 404: use a new key.

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