---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/16020#article
headline: "16020: Conference is full"
url: https://www.twilio.com/docs/api/errors/16020
inLanguage: en
dateModified: 2025-12-12T18:14:22.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 16020: Conference is full

Log Level: ERROR

## Description

A participant has attempted to join a conference that has reached its maximum participant capacity.

Please refer to https://www.twilio.com/docs/voice/twiml/conference for documentation on conference participant capacity.