---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/80103#article
headline: "80103: Participant Already In Session"
url: https://www.twilio.com/docs/api/errors/80103
inLanguage: en
dateModified: 2026-03-11T22:03:37.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 80103: Participant Already In Session

Log Type: APPLICATION

Log Level: ERROR

## Description

The identifier is already a participant in the Session

### Possible causes

Participant has already been added to the Session

### Possible solutions

Create a new Session to add this participant, or add a new participant in the Session.