---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/21245#article
headline: "21245: Trunk Validation Error"
url: https://www.twilio.com/docs/api/errors/21245
inLanguage: en
dateModified: 2026-03-11T18:38:39.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 21245: Trunk Validation Error

Log Type: APPLICATION

Log Level: ERROR

## Description

### Possible causes

* Cannot use another account's SID as the Termination URI for this Trunk
* Cannot create more than one Trunk with the same Termination URI
* Credential List or IP-ACL already associated with Trunk

### Possible solutions

* Please update your Trunk settings to avoid the conditions stated above. Learn more: [Configure Trunks](/docs/sip-trunking#configure-trunks).