---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/30015#article
headline: "30015: Non-supported channel type is used"
url: https://www.twilio.com/docs/api/errors/30015
inLanguage: en
dateModified: 2026-03-11T18:38:39.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 30015: Non-supported channel type is used

Log Level: ERROR

## Description

The To or From attributes have an unsupported prefix for channel

### Possible causes

* empty channel prefix for an attribute that requires a prefix
* non-existing prefix for an attribute that requires a prefix

### Possible solutions

* Check the To/From attributes channel prefix