---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/50413#article
headline: "50413: Account is not authorized to use proxy address"
url: https://www.twilio.com/docs/api/errors/50413
inLanguage: en
dateModified: 2026-03-11T20:43:38.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 50413: Account is not authorized to use proxy address

Log Level: ERROR

## Description

Your account is not authorized to use the requested proxy address.

### Possible causes

* The provided conversation proxy address is not allowed to be used under your account.

### Possible solutions

* Check that MessagingBinding.ProxyAddress parameter passed to API contains a proxy address that belongs to your account. For example, use a Twilio phone number that is purchased under the same project.