---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/53004#article
headline: "53004: Client sent an invalid signaling message"
url: https://www.twilio.com/docs/api/errors/53004
inLanguage: en
dateModified: 2025-12-12T18:14:22.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 53004: Client sent an invalid signaling message

Log Level: ERROR

## Description

Raised whenever the Client sends a message to the Server that the Server cannot handle.