---
url: /errors/registration_not_found.md
---
# `registration_not_found`

`registration_not_found`

## Description

The broker notification registration does not exist for this broker.

## HTTP Status

`404 Not Found`

## `doc_url` Format

The `doc_url` value is an absolute URL and changes by environment:

`<docs-base-url>/errors/registration_not_found`

## Typical Causes

* The registration identifier is wrong.
* The registration belongs to a different broker. The API gives the same answer as for an unknown identifier.
* The client did not keep the `id` that the registration request returned.

## How To Fix

1. Use the `id` from the response of `POST /v1/broker-notifications/registrations`, or the last segment of its `Location` header.
2. Use an access token of the broker that created the registration.
3. If you do not have the `id`, list your registrations with `GET /v1/broker-notifications/registrations`.