---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/13510#article
headline: "13510: Say: Invalid loop value"
url: https://www.twilio.com/docs/api/errors/13510
inLanguage: en
dateModified: 2025-12-18T21:40:49.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 13510: Say: Invalid loop value

Log Level: WARNING

## Description

The value of the loop attribute must be an integer greater or equal to zero. See the [Play Verb](/docs/voice/twiml/say#loop) API Reference for more information.