# Not implemented

The KeenAuth APIs return this problem type with HTTP status 501 (Not Implemented).

## Problem type

| Field | Value |
|---|---|
| Type URI | `https://docs.keenauth.com/errors/not_implemented` |
| Code | `not_implemented` |
| HTTP status | 501 Not Implemented |
| Title | Not implemented |

## Meaning

The operation is defined in the contract but is not yet available in this deployment; retrying does not change the result.

## Example response

Example response body. `detail` is a human-readable English description that is not meant for end users; `instance` identifies the request.

```json
{
  "type": "https://docs.keenauth.com/errors/not_implemented",
  "title": "Not implemented",
  "status": 501,
  "code": "not_implemented",
  "detail": "...",
  "instance": "urn:idp:request:<request_id>"
}
```

All error codes: [Error reference](/docs/errors).