---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/21450#article
headline: "21450: Phone number already validated on your account"
url: https://www.twilio.com/docs/api/errors/21450
inLanguage: en
dateModified: 2025-12-18T21:40:49.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 21450: Phone number already validated on your account

Log Level: ERROR

## Description

You attempted to verify a phone number for your account, but that number is already verified for your account.