---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/31302#article
headline: "31302: Unsupported Cancel Message Error"
url: https://www.twilio.com/docs/api/errors/31302
inLanguage: en
dateModified: 2026-03-11T20:01:16.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 31302: Unsupported Cancel Message Error

Log Type: APPLICATION

Log Level: ERROR

## Description

This version of the SDK no longer supports processing cancel push notification messages. You must register via Voice.register(...) on Android or \[TwilioVoice registerWithAccessToken:deviceToken:completion:] on iOS with this version of the SDK to stop receiving cancel push notification messages. Cancellations are now handled internally and reported to you on behalf of the SDK.

### Possible causes

The identity associated with the Twilio Voice SDK is still registered to receive cancel push notification messages.

### Possible solutions

The application must register via Voice.register(...) on Android or \[TwilioVoice registerWithAccessToken:deviceToken:completion:] on iOS to stop receiving cancel push notification messages.