---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/30937#article
headline: "30937: Phone number association rejection - Phone number limit exceeded for registration"
url: https://www.twilio.com/docs/api/errors/30937
inLanguage: en
dateModified: 2026-07-09T22:14:54.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 30937: Phone number association rejection - Phone number limit exceeded for registration

Log Type: APPLICATION

Log Level: ERROR

## Description

The request to add a phone number to a registration was rejected because the registration has reached the maximum number of phone numbers allowed.

### Possible causes

* The registration already has the maximum number of phone numbers associated with it.
* Multiple phone numbers were added to the registration without awareness of the per-registration limit.

### Possible solutions

* Create a new registration for the additional phone numbers instead of adding them to the existing registration.
* Review the phone numbers currently associated with the registration and remove any that are no longer needed before adding new ones.