---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/21223#article
headline: "21223: Invalid SipAuthPassword. Must be fewer than 256 chars"
url: https://www.twilio.com/docs/api/errors/21223
inLanguage: en
dateModified: 2025-12-18T21:40:49.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 21223: Invalid SipAuthPassword. Must be fewer than 256 chars

Log Level: WARNING

## Description

The SipAuthPassword you specified contained too many characters.