---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/50435#article
headline: "50435: Group MMS activation failed."
url: https://www.twilio.com/docs/api/errors/50435
inLanguage: en
dateModified: 2026-03-11T20:43:38.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 50435: Group MMS activation failed.

Log Type: APPLICATION

Log Level: ERROR

## 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.