---
page_type: error
code: 32204
message: "32204: SIP: 'From' phone number not verified"
level: ERROR
product: Elastic SIP Trunking
---

## Description

You attempted to initiate an outbound phone call, but the From number you specified is not a verified Outgoing Caller ID for your account. In order to use a phone number as the Caller ID on outgoing calls, you must first validate your ownership of that phone number.

### Possible Causes

The `From` number used to make outbound call not a Twilio number or not a verified caller ID

### Possible Solutions

Change the callerID used in the From field of the SIP INVITE to a Twilio number on your account or verify your number by visiting the Console [Verified Caller IDs](/user/account/phone-numbers/verified) or REST API.