---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/14111#article
headline: "14111: Invalid To phone number for Trial mode"
url: https://www.twilio.com/docs/api/errors/14111
inLanguage: en
dateModified: 2026-06-08T11:38:30.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 14111: Invalid To phone number for Trial mode

Log Level: WARNING

## Description

You can only send messages or place calls from a trial account to verified recipient numbers. If the `To` number is not verified on your trial account, Twilio returns this warning.

### Possible causes

* The `To` number has not been added as a verified recipient on your trial account.
* You are sending to a different phone number than the one you used to sign up, which is the only number verified automatically.
* Your trial account has already reached the limit for verified recipients.
* The recipient number was not added to your account because the same tester number is already associated with too many accounts.

### Possible solutions

* Verify the `To` phone number on your trial account, then send the message or place the call again.
* If you are testing with your own device, use the phone number you used to create the account or confirm that the destination number appears in your verified recipients list.
* Remove an unused verified recipient if you have reached your trial limit, then verify the new number.
* Upgrade your account if you need to contact recipients that are not verified on your trial account.

#### Additional resources

* [Twilio trial account](/docs/usage/trials)
* [Verified recipients](/docs/usage/trials#verified-recipients)
* [How to Add and Remove a Verified Phone Number or Caller ID with Twilio](https://help.twilio.com/articles/223180048-How-to-Add-and-Remove-a-Verified-Phone-Number-or-Caller-ID-with-Twilio)