---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/21407#article
headline: "21407: This Phone Number type does not support SMS"
url: https://www.twilio.com/docs/api/errors/21407
inLanguage: en
dateModified: 2025-12-18T21:40:49.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 21407: This Phone Number type does not support SMS

Log Level: ERROR

## Description

This phone number type does not support SMS. You cannot set SmsUrl, SmsMethod, SmsFallbackUrl, or SmsFallbackMethod