---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/13999#article
headline: "13999: Pause: Invalid timeout value"
url: https://www.twilio.com/docs/api/errors/13999
inLanguage: en
dateModified: 2026-10-27T17:52:37.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 13999: Pause: Invalid timeout value

Log Type: APPLICATION

Log Level: WARNING

## Description

Twilio sends this warning when `<Pause>` receives a `timeout` value that is not an integer. To set how long `<Pause>` waits, use the `length` attribute with a positive integer, in seconds.

### Possible causes

* `timeout` is set to a value that is not an integer.

### Possible solutions

* Use a whole number of seconds for `timeout`, or remove the attribute.
* Use `length` to set the pause duration in seconds.

#### Additional resources

* [TwiML Voice: `<Pause>`](/docs/voice/twiml/pause)
* [Debugging Your Twilio Application](/docs/usage/troubleshooting/debugging-your-application)