---
page_type: error
code: 21245
message: "21245: Trunk Validation Error"
level: ERROR
product: Elastic SIP Trunking
---

## Description

Trunk Validation Error

### 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).