Shopify Flow now supports union and interface fields from the Shopify GraphQL API, such as PurchasingEntity and DiscountApplications. This allows for more versatile and dynamic workflows, enabling users to access detailed data like which company placed an order or if a Scripts discount was applied. Users should ensure they check the type using the 'typename' field to handle possible variations in data types.
→ Read the full update on changelog.shopify.com