Shopify order creation will accept multiple tracking numbers.
Shopify's 2026-10 Admin GraphQL API adds a trackingNumbers array to orderCreate fulfillment inputs.
Check Test the 2026-10 API.
Why it matters and sources 1
Who should care
Shopify apps, ERP connectors, migration tools, and operations teams that import fulfilled multi-package orders.
What to check
Test a multi-package order in the 2026-10 API, confirm all numbers are returned and surfaced downstream, and make the integration send either the singular or plural field deliberately.