Shopify Flow: Changes to Action extensions result in fewer breaking changes
Shopify developer change
MerchantDiff detected this entry in Shopify's official developer changelog on July 07, 2026.
This Shopify update is categorized as Tools, Update, 2026-07.
What changed
Your server-side code now has more control over how breaking changes to an action’s configuration fields are handled. Instead of failing validation when there’s a field mismatch, workflows that use older versions of an action will continue to execute, and Shopify will still send the request to the configured endpoint URL. Your server can then decide how to handle schema differences: for example, it can set default values for new required fields, ignore fields that were removed, or reject the request. Why it’s changing Previously, any change to an action’s configuration fields was treated as a breaking change in merchant workflows. Runtime validation would fail, and Shopify wouldn’t send the request to the partner server.
Who is affected
Shopify app developers using the API or platform feature named in this update should review the official change.
What action may be needed
Your action’s endpoint may now receive payloads that don’t exactly match the action’s current configuration, but instead match a previous version that merchants are still using in their workflows.
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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