# 50341: Invalid messaging service SID

Log Level: ERROR

## Description

An invalid messaging service SID was supplied.

### Possible causes

The MessagingServiceSid provided with the request does not match a valid SID pattern (MGxx).

### Possible solutions

Verify that the SID provided is prefixed with MG and is not missing digits. Your messaging services can be enumerated at https://twilio.com/console/sms/services.