---
page_type: error
code: 21705
message: "21705: The Messaging Service is invalid"
level: ERROR
---

## Description

### Possible Causes

- The MessagingServiceSid provided with the request does not match a valid Sid pattern(MGxxx).

### Possible Solutions

- Double check the Messaging Service Sid parameter that you are using.
- Find a specific Messaging Service Sid and manage your Messaging Services in the [Twilio Console](https://www.twilio.com/console/sms/services).