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

`callback_url_already_registered_for_broker`

## Description

The callback URL is already registered for this broker.

## HTTP Status

`409 Conflict`

## `doc_url` Format

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

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

## Typical Causes

* The same registration request was submitted more than once.
* The client retried a successful registration without checking existing state.
* A second registration was attempted with the same callback URL for the same broker.

## How To Fix

1. Reuse the existing registration if this callback URL is already registered.
2. Use a different callback URL if a new registration is required.
3. Retry only after confirming the broker does not already have that registration.