# 30109: Callback URL is invalid

Log Type: APPLICATION

Log Level: ERROR

## Description

The URL specific in your API request for Click Tracking is invalid

### Possible causes

* Protocol could be missing
* Hostname could be invalid
* Incorrect encoding

### Possible solutions

Make sure you submit a fully qualified URL including:

* protocol (http:// or https://)
* hostname
* file path
* properly url-encoded query parameters