---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/32100#article
headline: "32100: SIP: Trial accounts can only call verified caller IDs"
url: https://www.twilio.com/docs/api/errors/32100
inLanguage: en
dateModified: 2026-05-06T13:22:30.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 32100: SIP: Trial accounts can only call verified caller IDs

Log Level: WARNING

## Description

You must verify your caller ID on the Console or via the REST API. You must use a verified caller ID for both the from and to number while in Trial status.

### Possible causes

You attempted to use an unverified caller ID for a SIP call while on a trial account.

### Possible solutions

* Verify your caller ID in the [Console](https://1console.twilio.com/us1/develop/phone-numbers/manage/verified). See [Verified recipients](/docs/usage/trials#verified-recipients) for trial verification details.
* [Upgrade your account](/docs/usage/trials#upgrade-your-account) to remove this restriction.