---
title: Cart Warnings in Storefront API Cart - 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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  html: https://shopify.dev/changelog/cart-warnings-in-storefront-api-cart
  md: https://shopify.dev/changelog/cart-warnings-in-storefront-api-cart.md
---

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

October 1, 2024

Tags:

* Action Required
* Storefront GraphQL API
* 2024-10

# Cart Warnings in Storefront API Cart

As of API version 2024-10, inventory errors about stock levels will no longer be included in the `userErrors` of cart mutations. Inventory errors will now be available in a new return field, `warnings` and will contain explicit `code` values of `MERCHANDISE_NOT_ENOUGH_STOCK` or `MERCHANDISE_OUT_OF_STOCK`.

Warnings will be available on all cart mutations to show automatic changes that occurred during the mutation. You can use warnings to manage items in your cart or display information to a buyer. For example, out of stock lines can be easily removed from a cart by using the `target` field included in the warning as the input to a call to `CartLineRemove`.

Learn more about cart warnings on [Shopify.dev](https://shopify.dev/docs/storefronts/headless/building-with-the-storefront-api/cart/cart-warnings).