---
page_type: error
code: 54051
message: "54051: Invalid webhook URL"
level: ERROR
product: Sync
---

## Description

### Possible Causes

- You did not pass a correctly-formatted URL.
- You are crafting HTTP requests yourself and passed a URL, but did not percent-encoded it.
- You passed a webhook URL that is longer than 512 characters.

### Possible Solutions

Confirm that you are providing a fully-qualified, percent-encoded HTTP URL no longer than 512 characters.