---
page_type: error
code: 21235
message: "21235: IP Access Control List Validation Error"
level: ERROR
---

## Description

One of the parameters passed when creating or updating an IP Access Control List was incorrect.

### Possible Causes

- An IP Access Control List or IP Address with the same FriendlyName may already exist.
- The IP Access Control List may already contain that IP Address

### Possible Solutions

- Use a different FriendlyName
- Make sure the IP Access Control List does not already contain that IP Address.