---
page_type: error
code: 50510
message: "50510: Invalid message media SID"
level: ERROR
product: Programmable Chat
---

## Error - 50510

### Conversations: Invalid message media SID

An invalid multimedia attachment SID was supplied for this message.

#### Possible Causes

- MediaSid parameter provided with the request does not match a valid media SID pattern (MExx).

#### Possible Solutions

- Add a valid MediaSid parameter to the API request and supply a media SID that is uploaded under your service instance.