---
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"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/53202#article
headline: "53202: Participant identity contains invalid characters"
url: https://www.twilio.com/docs/api/errors/53202
inLanguage: en
dateModified: 2026-03-11T20:43:38.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 53202: Participant identity contains invalid characters

Log Type: APPLICATION

Log Level: ERROR

## Description

Raised whenever a Participant identity contains invalid characters.

### Possible causes

* The Participant identity contains an invalid UTF-8 byte sequence.

### Possible solutions

* Choose a Participant identity that is a valid UTF-8 string.