{
 "id": "shopify-61516772a2",
 "platform": "shopify",
 "title": "The `cartDiscountCodeUpdate` mutation now requires the `discountCodes` field",
 "summary": "As part of the GraphQL Storefront API 2026-01 release , the cartDiscountCodesUpdate mutation now requires the discountCodes argument to be included. Previously, mutation calls without the discountCodes argument were allowed, but would not actually modify the cart in any way.",
 "categories": [
  "breaking_change"
 ],
 "tags": [
  "2026-01",
  "API",
  "Action Required",
  "Storefront API",
  "Update"
 ],
 "published_date": "2025-10-30",
 "effective_date": null,
 "effective_date_precision": null,
 "source_url": "https://shopify.dev/changelog/the-cartdiscountcodeupdate-mutation-now-requires-the-discountcodes-field",
 "source_name": "Shopify developer changelog",
 "fetched_at": "2026-10-17T03:44:00+00:00",
 "collector": "shopify/changelog",
 "first_seen": "2026-10-17T01:05:46+00:00",
 "in_source": true,
 "last_seen_in_source": "2026-10-17T03:44:00+00:00",
 "upcoming": false,
 "url": "https://adstackwatch.com/changes/shopify-61516772a2/"
}