---
title: >-
  Cart quantity limits are now determined by market region - 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/contextualized-inventory-availability-in-cart-updates
  md: >-
    https://shopify.dev/changelog/contextualized-inventory-availability-in-cart-updates.md
metadata:
  effectiveApiVersion: ''
  affectedApi:
    - displayName: Storefront GraphQL API
      handle: storefront-graphql
  primaryTag:
    displayName: API
    handle: api
  secondaryTag:
    displayName: New
    handle: new
  indicatesActionRequired: false
  createdAt: '2025-03-19T15:13:19-04:00'
  postedAt: '2025-07-18T10:00:00-04:00'
  updatedAt: '2025-07-08T20:41:18-04:00'
  effectiveAt: '2025-03-31T12:00:00-04:00'
---

July 18, 2025

Tags:

* Storefront GraphQL API

# Cart quantity limits are now determined by market region

Cart quantity limits now depend on inventory available in the buyer's market region, not total stock. Previously, customers could add up to the total product inventory from all locations to their cart. Now, if a customer attempts to add more items than are available for fulfillment in their market, the quantity will automatically be reduced to the available amount and the API will return a message to explain the adjustment.

This change applies to shops with [fulfillable inventory](https://help.shopify.com/en/manual/fulfillment/setup/fulfillable-inventory) set to **sell only within configured shipping zones** and impacts cart operations in the [GraphQL Storefront API](https://shopify.dev/docs/api/storefront).