---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/573002#article
headline: "573002: The 'From' number isn't assigned to this verified Voice recipient"
url: https://www.twilio.com/docs/api/errors/573002
inLanguage: en
dateModified: 2026-10-20T22:48:02.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 573002: The 'From' number isn't assigned to this verified Voice recipient

Log Type: APPLICATION

Log Level: ERROR

## Description

This error occurs when you place a Voice call from a trial account using a 'From' number that isn't the trial number assigned to the verified recipient you're calling. During a trial, Twilio assigns a trial phone number to each verified recipient, and the assigned number can differ by product and by recipient.

### Possible causes

* The 'From' number in the request isn't the trial number assigned to this verified recipient for Voice.
* The request uses a trial number assigned to a different verified recipient or to a different product.

### Possible solutions

* Check the Twilio Console to find the trial number assigned to this verified recipient for Voice.
* Place the call again using the assigned trial number as the 'From' number.

#### Additional resources

* [Twilio trial accounts](/docs/usage/trials)
* [Twilio trial numbers](/docs/usage/trials#twilio-trial-numbers)
* [Try out Voice](/docs/usage/trials/try-out-voice)