---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/14237#article
headline: "14237: Dial->Conference: Invalid PostWorkActivitySid"
url: https://www.twilio.com/docs/api/errors/14237
inLanguage: en
dateModified: 2025-12-18T21:40:49.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 14237: Dial->Conference: Invalid PostWorkActivitySid

Log Level: ERROR

## Description

The provided PostWorkActivitySid on the Conference TwiML was an invalid ActivitySid.