---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/21733#article
headline: "21733: Default Messaging Service Not Found"
url: https://www.twilio.com/docs/api/errors/21733
inLanguage: en
dateModified: 2026-03-26T06:28:41.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 21733: Default Messaging Service Not Found

Log Type: TWILIO

Log Level: WARNING

## Description

Twilio could not find the account's default Messaging Service. The outbound message itself should still succeed, but this warning can still appear.

### Possible causes

* A default Messaging Service was not created for the account.

### Possible solutions

* Contact Twilio Messaging Support with the `Account SID` and error code so the warning can be cleared.
* Confirm that the account has a default Messaging Service. Twilio automatically generates a default Messaging Service for each account upon creation.

#### Additional resources

* [Messaging Services](/docs/messaging/services)
* [Build your Account](/docs/messaging/onboarding/build-your-account)
* [SMS Foundations](/docs/messaging/onboarding/sms-foundations)