OpenCart Integration with ERP / CRM / API

OpenCart integration with ERP, CRM and external APIs

While a store is small, a manager copies orders into the accounting system by hand. As volume grows that becomes the bottleneck: data entry errors, stale stock figures, and selling items that are not in the warehouse.

What usually gets synchronised

• Stock and prices from accounting into the store — the most common request and the biggest time saving.
• Orders from the store into accounting — together with the customer, the delivery point and the payment method.
• Statuses back into the store: paid, picked, shipped.
• Products and categories — where accounting is the single source of truth for the catalogue.
• Customers — for CRM and loyalty programmes.

The key question before starting: which side owns the data

This is settled before any code is written. If accounting owns prices, the store must not allow editing them — otherwise changes get overwritten on every sync and nobody understands why. Conflicts like that surface a month after launch and cost more to untangle than agreeing them up front would have.

The technical side

Exchange runs in both directions and in various formats: file-based exchange, calls to the store's API, or an intermediate service. Which one fits depends on what your accounting system can do and whether it has permanent internet access.

Things that are mandatory and often skipped: an exchange log, so it is visible what was transferred and when; error handling, so one problematic product does not halt synchronisation of the entire catalogue; and protection of the exchange endpoint from outside requests.

On timelines and price

The listed cost is a reference for a typical stock-and-orders exchange. The real figure depends on how non-standard your accounting configuration is and which fields need mapping. I give an estimate after reviewing your system, before work begins.