---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/13238#article
headline: "13238: Dial->Conference: Invalid Verb used in waitUrl, holdUrl, or announceUrl TwiML"
url: https://www.twilio.com/docs/api/errors/13238
inLanguage: en
dateModified: 2026-03-11T18:38:39.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 13238: Dial->Conference: Invalid Verb used in waitUrl, holdUrl, or announceUrl TwiML

Log Type: APPLICATION

Log Level: ERROR

## Description

The TwiML that executes via the waitUrl, holdUrl, or announceUrl can only contain Say, Play, Pause, and Redirect verbs. Dial, Gather, Hangup and Record are not allowed.

### Possible causes

Dial, Gather, Hangup or Record verbs are used in the TwiML.

### Possible solutions

Remove Dial, Gather, Hangup and Record verbs from the TwiML.