---
page_type: error
code: 50511
message: "50511: Invalid message media content type"
level: ERROR
product: Programmable Chat
---

## Error - 50511

### Conversations: Invalid message media content type

An invalid multimedia attachment content type was supplied.

#### Possible Causes

- The MIME content type of multimedia attachment you are trying to send is not acceptable for this conversation.

#### Possible Solutions

- Make sure that the content type of multimedia attachments conform to channel constraints. Check for accepted MIME types in [API documentation](/docs/conversations/conversations-limits#media-limits).