---
page_type: error
code: 90011
message: "90011: MessageSid is invalid"
level: ERROR
---

## Description

MessageSid is invalid

### Possible Causes

MessageSid has incorrect sid format or prefix (SM and MM allowed)

### Possible Solutions

Use correct MessageSid. Example `SMec8e12b0a5eb4fc68e173f1c5db95b2a`