---
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"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/18054#article
headline: "18054: Invalid phone number"
url: https://www.twilio.com/docs/api/errors/18054
inLanguage: en
dateModified: 2026-03-11T18:38:39.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 18054: Invalid phone number

Log Type: APPLICATION

Log Level: ERROR

## Description

The phone number you provided is not valid.

### Possible causes

The phone number format is incorrect or or contains errors.

### Possible solutions

Please review and provide a valid phone number in E164 format.