---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/60407#article
headline: "60407: Authentication Token Error"
url: https://www.twilio.com/docs/api/errors/60407
inLanguage: en
dateModified: 2026-06-08T11:29:20.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 60407: Authentication Token Error

Log Type: TWILIO

Log Level: ERROR

## Description

This error occurs when Verify cannot generate an `AccessToken` for a Verify Push enrollment request. Use the Verify `AccessToken` resource only for Verify Push enrollment and registration flows. This resource supports only the `push` factor type.

### Possible causes

* You sent a `factorType` value that Verify Push does not support. The Verify `AccessToken` resource accepts only `push`.
* You tried to use the Verify Push `AccessToken` flow for a non-push verification flow. The `AccessToken` resource is for creating or registering a Verify Push Entity or Factor, not for starting SMS, voice, WhatsApp, email, or other Verify channel verifications.
* You attempted to reuse an access token pattern from another Twilio SDK product. Verify Push `AccessToken` values cannot be reused between Voice, Chat, or Video style token flows.

### Possible solutions

* Set `factorType` to `push` when you create the `AccessToken`.
* Generate the token from your backend for the correct Verify Service and return the token, `identity`, and Verify Service SID to your client application as part of your Verify Push enrollment flow.
* If you need SMS, voice, WhatsApp, email, or another non-push Verify channel, start a Verification with the appropriate `channel` instead of creating an `AccessToken`.
* Use an immutable `identity` value from your own system when you create the token, such as a UUID, GUID, or SID.

#### Additional resources

* [Access Token Resource](/docs/verify/api/access-token)
* [Verify Push Client Library Technical Overview](/docs/verify/push/technical-overview)
* [Verification Channels](/docs/verify/authentication-channels)