Decide who owns each field
A Shopify integration often connects two catalogues with different rules. Decide which system owns the title, price, stock and variant information. Without that decision, two services can repeatedly overwrite each other while both appear to be working correctly.
Keep identity separate from presentation
Use the provider’s identifiers to track mappings, and record which store owns them. Names and other editable fields are poor substitutes for a deliberate mapping strategy. Decide how product deletion, variant changes and disconnected stores affect local records.
Combine events with reconciliation
Shopify webhooks notify an app about subscribed events. Shopify’s documentation also recommends reconciliation because webhook delivery should not be treated as a complete guarantee. Use events to trigger timely work, and a separate reconciliation process to investigate gaps between the catalogues.
Make failures recoverable
Track the last successful operation and preserve useful error information. A failed update should not silently disappear. Give staff a way to understand what failed and repeat the intended operation after the cause is resolved. Avoid displaying access tokens or full sensitive payloads in diagnostic output.
Review realistic changes
Test more than a product created once. Change a variant, remove a product, interrupt an update and reconnect a store. Compare the resulting records in both systems. A dependable sync has a stated ownership model and a recovery path that the team can explain.