---
title: Updated MetafieldsSetInput.type to be nullable for metafieldsSet mutation - 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.
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January 1, 2023

Tags:

* API
* 2023-01

# Updated MetafieldsSetInput.type to be nullable for metafieldsSet mutation

As part of the **2023-01** GraphQL Admin API release, we've updated the `metafieldsSet` API to make the `MetafieldsSetInput.type` field nullable. When the metafield you are trying to mutate already has corresponding [metafield definitions](https://help.shopify.com/en/manual/metafields/metafield-definitions), you can simplify the mutation by omitting the `type` field from its arguments. The `type` field is still required when the metafield doesn't have a corresponding definition to the given `ownerId`, `namespace` and `key`.

For more information, refer to the [metafieldsSet](https://shopify.dev/api/admin-graphql/unstable/mutations/metafieldsSet) mutation.