---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/22500#article
headline: "22500: Twilio phone number using deprecated API version"
url: https://www.twilio.com/docs/api/errors/22500
inLanguage: en
dateModified: 2026-03-11T18:38:39.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 22500: Twilio phone number using deprecated API version

Log Type: APPLICATION

Log Level: ERROR

## Description

Phone Numbers no longer supports 2008-08-01 API. The Twilio phone number is configured for the deprecated 2008-08-01 API, which is not compatible. Update the phone number API version to 2010-04-01

### Possible causes

The Twilio phone number is configured for the 2008-08-01 API

### Possible solutions

Update the phone number API version to 2010-04-01 or later version