The `orderCreate` mutation now supports multiple tracking numbers for each fulfillment
Shopify developer change
MerchantDiff detected this entry in Shopify's official developer changelog on August 03, 2026.
This Shopify update is categorized as API, New, GraphQL Admin API, Admin REST API, 2026-10.
What changed
We’ve added a trackingNumbers field to OrderCreateFulfillmentInput, so you can attach multiple tracking numbers to a fulfillment when importing orders. If you use the orderCreate mutation to import orders that ship in more than one package, you no longer need to update the fulfillment after creation to add additional tracking numbers. Instead, you can include all tracking numbers upfront when you create the order. Use the trackingNumbers field to pass an array of tracking number strings, for example: trackingNumbers: ["1Z999AA10123456784", "1Z999AA10123456785"] The trackingCompany value you provide applies to every tracking number in the array. This behavior is consistent with how FulfillmentTrackingInput already works on the fulfillmentCreate mutation.
Who is affected
Apps using the affected Shopify GraphQL API surface should review this change.
What action may be needed
Review whether the new capability is relevant to your app. If you plan to use it, test the affected API or workflow before adopting it in production.
Use the official Shopify entry below as the source of truth for technical implementation details, affected APIs, migration instructions and deadlines.
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