---
title: Compare-and-swap (CAS) for the Metafields API - 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/compare-and-swap-cas-for-the-metafields-api
  md: https://shopify.dev/changelog/compare-and-swap-cas-for-the-metafields-api.md
---

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

June 28, 2024

Tags:

* Admin GraphQL API
* Customer Account API
* 2024-07

# Compare-and-swap (CAS) for the Metafields API

As of GraphQL Admin and Customer Account APIs version `2024-07`, you can now set metafields using compare-and-swap (CAS) through the new `compareDigest` field for the `metafieldsSet` mutation.

Using CAS will add support to properly handle concurrency requests.