Stop copying orders between systems by hand.

Worked example, with illustrative figures for a hypothetical store (not a client result): Shopify integrations for a store keying 1,200 orders a month into its ERP by hand, at 3 minutes each, save about 60 hours a month. The report tracks orders synced, failed syncs caught and fixed, and the error rate, for example from 2% of orders keyed wrongly to 0.1% after the sync.

We build integrations on our own systems too. This site’s lead forms check each submission, store it, and send a WhatsApp notification to our team without anyone copying data by hand, and every step logs its result so a failure shows up at once. A store integration follows the same pattern at a larger scale: each record moves once, is checked on arrival, and leaves a trail.

Shopify integrations start with a map, not code. We list every system the store uses (ERP, CRM, warehouse or 3PL, accounting, marketplaces) and draw what moves between them: orders out, stock in, customers both ways, invoices and refunds. For each field we agree which system owns it. Most sync bugs we see come from two systems both thinking they own the stock count.

Then we choose the lightest tool that works. Plenty of flows are covered by an existing app or by Shopify Flow, and we say so in the audit. Custom work is for the flows no app handles well, such as an ERP with its own order format, a B2B price list from an internal system, or several warehouses that each report stock differently.

New builds use the GraphQL Admin API. As of October 2026, Shopify’s REST Admin API reference says REST became a legacy API on 1 October 2024 and that new public apps must use GraphQL from 1 April 2025. Older private integrations often still call REST, so the audit lists those calls and we move them before they become a problem.

Webhooks carry the changes. When an order is created, Shopify sends it to the integration at once instead of the integration asking every few minutes. Shopify’s webhook guide says to verify the HMAC signature, ignore duplicate deliveries using the webhook ID, and not rely on order, because a product update can arrive before the product create. We build all three in, and answer each delivery quickly, since Shopify’s troubleshooting page says a delivery fails if the app takes more than five seconds.

Nothing is left to webhooks alone. Shopify’s webhook troubleshooting page says failed deliveries are retried up to eight times over four hours, and then the subscription can be removed. So every integration has a scheduled catch-up job that compares recent orders and stock on both sides and syncs anything missed. Large first syncs, such as a full product catalogue, run as bulk operations, which return the data as one file instead of thousands of calls.

Last, we keep it running. Shopify releases a new API version every quarter and supports each one for at least 12 months, according to its API versioning page. We pin each integration to a version, note when it expires, and update it in time. Your team gets an alert the same day any sync fails, with the record and the reason, and a monthly note on what ran.