---
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"@id": https://www.twilio.com/docs/api/errors/18609#article
headline: "18609: Ineligible Business Registration Authority"
url: https://www.twilio.com/docs/api/errors/18609
inLanguage: en
dateModified: 2026-03-11T18:38:39.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 18609: Ineligible Business Registration Authority

Log Type: APPLICATION

Log Level: ERROR

## Description

The provided business registration authority is not an EIN (Employer Identification Number) or DUN (Data Universal Numbering System) number.

### Possible causes

The submitted business registration authority does not meet the eligibility requirements for the US Voice Integrity/CNAM trust product.

### Possible solutions

Please resubmit your registration using either an EIN or a DUN number.