---
title: "[Cart AJAX API] Inventory error message updates - 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-ajax-api-inventory-error-message-updates
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---

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

March 4, 2025

Tags:

* API

# \[Cart AJAX API] Inventory error message updates

We are updating the error messages in the AJAX API for cases where a client requests more inventory than is available.

* If no inventory of a variant is in the cart and the client requests more than is available, the error message will be: "Only *available quantity* items were added to your cart."
* If all available inventory of a variant is already in the cart and the client requests more, the error message will be: "The maximum quantity of this item is already in your cart."

These changes will affect the `add.js`, `change.js`, and `update.js` endpoints.