# Session limit reached

The KeenAuth APIs return this problem type with HTTP status 409 (Conflict).

## Problem type

| Field | Value |
|---|---|
| Type URI | `https://docs.keenauth.com/errors/session_limit_reached` |
| Code | `session_limit_reached` |
| HTTP status | 409 Conflict |
| Title | Session limit reached |

## Meaning

The concurrent session limit is reached in `deny_new` mode. No session was created; the user ends one of their active sessions and signs in again.

## 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/session_limit_reached",
  "title": "Session limit reached",
  "status": 409,
  "code": "session_limit_reached",
  "detail": "...",
  "instance": "urn:idp:request:<request_id>"
}
```

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