---
title: New metafield definition types in GraphQL - collection_reference / list.collection_reference - Shopify developer changelog
description: Shopify’s developer changelog documents all changes to Shopify’s platform. Find the latest news and learn about new platform opportunities.
source_url:
  html: https://shopify.dev/changelog/new-metafield-definition-types-in-graphql-collection_reference-list-collection_reference
  md: https://shopify.dev/changelog/new-metafield-definition-types-in-graphql-collection_reference-list-collection_reference.md
---

[Back to Developer changelog](https://shopify.dev/changelog)

September 26, 2022

Tags:

* API
* 2022-10

# New metafield definition types in GraphQL - collection\_reference / list.collection\_reference

As of GraphQL API **2022-10**, two new metafield definition types are available:

* `collection_reference`: A reference to a collection on the online store.
* `list.collection_reference`: A list of collection references on the online store.

Learn more about the new reference types in [Shopify.dev](https://shopify.dev/api/admin-graphql/2022-10/unions/MetafieldReference), and see [examples](https://shopify.dev/apps/metafields/types).