2026-10: Release notes

The obsolete ITEM_NOT_STOCKED_AT_LOCATION error is removed from InventoryAdjustQuantities, InventoryMoveQuantities, and InventorySetOnHandQuantities, and from the InventorySetQuantitiesUserErrorCode enum. Remove app logic that handles this specific error.

OrderCreateFulfillmentInput now includes trackingNumbers, so orderCreate can attach multiple tracking numbers when importing orders with multi-package fulfillments. If both trackingNumber and trackingNumbers are provided, trackingNumber takes precedence.

Changing the shipping address on an unfulfilled order with orderUpdate or the REST Admin API order update endpoint now recalculates taxes for the new destination. After updating, query updated taxLines, totalTaxSet, totals, and compare balances to handle payment or refund differences.

The deprecated priceRule field is removed from DraftOrderDiscountNotAppliedWarning. The legacy PriceRule object and related types are also removed from the public schema. Update queries from draftOrderCalculate, draftOrderCreate, and draftOrderUpdate to select discountTitle and discountCode instead.

The GraphQL Admin API adds SubscriptionContractCalculation as the successor to SubscriptionDraft for creating, updating, and editing subscription contracts. It replaces the multi-step draft workflow with a stateless calculate → poll → commit lifecycle through Shopify’s checkout engine.

Order.displayFulfillmentStatus and other fields typed as OrderDisplayFulfillmentStatus can now return FULFILLMENT_NOT_REQUIRED for orders with zero remaining fulfillable quantity, instead of UNFULFILLED. Handle the new enum value if you exhaustively map fulfillment statuses.

The GraphQL Admin API now returns an error when a query filters by a metafield that isn't valid for filtering, instead of silently ignoring the predicate. Update affected metafield filter queries before you upgrade. Check that definitions support filtering and comparison operators.

ExchangeLineItem now includes productId, title, variantSku, and variantTitle fields, so apps can access product and variant details directly when querying exchange line items.

Creating carrier services with carrierServiceCreate or POST /admin/api/{version}/carrier_services.json now registers only the service. It doesn't add rates to the General shipping profile. Configure carrier-calculated rates in a shipping profile for checkout visibility.

The deprecated Customer.lastIncompleteCheckout field is removed, along with the unreachable Checkout type subtree. Remove any queries for Customer.lastIncompleteCheckout or nested Checkout fields before upgrading; there is no Customer Account API replacement.

Third-party tax apps now receive Global IDs for entity references in tax calculation requests and tax summary webhook summary sections, with new top-level admin_graphql_api_id fields. Update integrations to parse GID-formatted IDs in these payloads.

The Customer object in Shopify Functions now exposes createdAt. Request createdAt from Cart.buyerIdentity.customer when Function logic needs the date and time a customer account was created. Continue handling guest buyers where customer data is unavailable.

Apps can now model Shopify Analytics data with analytics-queryable metafields and the App Events API, query it with the ShopifyQL API, embed analytics web components, and add annotations and metric targets to charts.

@inContext directive now accepts an optional channelId argument to apply a sales channel’s context across a query, including channel-specific product availability and pricing.