---
page_type: error
code: 50435
message: "50435: Group MMS activation failed."
level: ERROR
product: Programmable Chat
---

## Description

The conversation's Group MMS could not be activated.

### Possible Causes

- The conversation does not have at least three participants with messaging binding.
- The conversation has got a participant with identity but without projected address.
- The conversation's participants do not make a valid address list for group messaging.

### Possible Solutions

- Check that all the participants have messaging bindings.
- Check that there is at least one participant with user address only.
- Check that there is at least one participant with a proxy address or a projected address.