---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/51110#article
headline: "51110: Twilsock: Token contains multiple grants of same product"
url: https://www.twilio.com/docs/api/errors/51110
inLanguage: en
dateModified: 2026-06-08T12:04:59.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 51110: Twilsock: Token contains multiple grants of same product

Log Level: ERROR

## Description

This error occurs when the Access Token you send to Twilsock includes duplicate grants for the same product. Access Tokens use a `grants` object to define permissions, and you can include multiple grants only when they are for different Twilio products.

### Possible causes

* The `grants` payload contains the same product grant more than once.
* The token was created for a client SDK but includes duplicate authorization for that same Twilio product in a single Access Token.
* The final `grants` object does not match the expected Access Token structure.

### Possible solutions

* Rebuild the Access Token so the `grants` object contains only one grant per product. If your client uses multiple Twilio products, keep one grant for each product and remove the duplicate grant.
* If you are creating a token for Conversations, include one `ChatGrant`. If you are creating a token for Sync, include one `SyncGrant`.
* Generate the token with a Twilio helper library to reduce formatting mistakes. Decode the token in `jwt.io` and confirm the `grants` payload contains only the product grants you intend to send.

#### Additional resources

* [Access Tokens](/docs/iam/access-tokens)
* [Issuing Sync Tokens](/docs/sync/identity-and-access-tokens)
* [Troubleshooting Invalid Access Tokens](https://help.twilio.com/articles/115015890207-Troubleshooting-Invalid-Access-Tokens)