---
title: Error 10043 · Cloudflare Support docs
description: This error indicates that the source URL in a redirect exceeds the
  maximum allowed length.
lastUpdated: 2025-05-16T13:10:20.000Z
chatbotDeprioritize: false
source_url:
  html: https://developers.cloudflare.com/support/troubleshooting/http-status-codes/cloudflare-10xxx-errors/error-10043/
  md: https://developers.cloudflare.com/support/troubleshooting/http-status-codes/cloudflare-10xxx-errors/error-10043/index.md
---

## Error 10043: Source URL in redirect is too long

This error indicates that the source URL in a redirect exceeds the maximum allowed length.

### Common causes

This error occurs when the source URL value of a URL redirect is too long. The maximum length of a source URL is 32,768 characters. Possible causes of this error are:

* Dynamic URLs that contain excessive query parameters or tracking codes.
* Unnecessary path segments or redundant subdirectories in the URL.

### Resolution

You need to use a shorter URL as the source URL.
