---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/21669#article
headline: "21669: Phone number region does not match the Messaging Service region"
url: https://www.twilio.com/docs/api/errors/21669
inLanguage: en
dateModified: 2026-07-15T21:14:07.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 21669: Phone number region does not match the Messaging Service region

Log Type: APPLICATION

Log Level: ERROR

## Description

This error occurs when you try to add a phone number to a Messaging Service, but the phone number's regional configuration doesn't match the region of the Messaging Service. Phone numbers are configured for `US1` by default.

### Possible causes

* The phone number is configured for `US1`, but you are trying to add it to a Messaging Service in the `IE1` region.
* The phone number is configured for `IE1`, but you are trying to add it to a Messaging Service in the `US1` region.

### Possible solutions

* Update the phone number's messaging region to match the Messaging Service's region before adding it.
* Add the phone number to a Messaging Service that matches the phone number's current regional configuration.

#### Additional resources

* [Twilio Regions](/docs/global-infrastructure/understanding-twilio-regions)
* [Use the Programmable Messaging API with Twilio Regions](/docs/global-infrastructure/messaging-api-with-twilio-regions)
* [Phone Number Regional Configuration API](/docs/global-infrastructure/inbound-processing-api#v3-region-configuration-api)