Every morning, someone on your team opens Shopify. They look at the new orders. Then they open your ERP. Then they type in each order. Customer name. Address. Line items. Quantities. Prices. One by one.
This takes hours. And every time someone types a number wrong, it creates a problem that takes even longer to fix. Wrong inventory counts. Wrong invoices. Wrong reports.
You know this is inefficient. You have probably searched for a solution. Maybe you found an app that promises Shopify-Sage integration. Maybe you tried Zapier. Maybe you gave up and accepted that manual data entry is just part of running the business.
It does not have to be. I have built custom ERP integrations for Shopify stores, including a bidirectional sync with Exigo that runs at 99.9% uptime. Here is what connecting your Shopify store to your ERP actually involves.
What ERP Integration Actually Means
At its simplest, ERP integration means your Shopify store and your ERP system share data automatically. When an order comes in on Shopify, it appears in your ERP without anyone typing it. When inventory changes in your ERP (new stock arrives, items are allocated), Shopify's stock counts update automatically.
That is the simple version. The real version has details that matter.
Which data syncs? Orders are the obvious starting point. But what about customers? Product information? Pricing? Inventory levels? Credit notes? Fulfillment status? The more data you sync, the more useful the integration. But each additional data type adds complexity.
Which direction? One-way sync (Shopify to ERP only) is simpler. Orders flow from Shopify to your ERP. That covers the daily data entry problem. Bidirectional sync means data flows both ways: orders go from Shopify to the ERP, and inventory levels, pricing, and fulfillment status come back from the ERP to Shopify. This is more complex but gives you a single source of truth.
How often? Real-time (within seconds of an order being placed) versus batch processing (once an hour, or once a day). Real-time is more complex to build and monitor. Batch processing is simpler but means your systems are always slightly out of sync.
What happens when something fails? This is the question most people forget to ask. What if the ERP is down for maintenance when an order comes in? What if the data format changes? What if an order has a product that does not exist in the ERP yet? A good integration handles failures gracefully: retries, error logging, and alerts so nothing gets lost.
The SA ERP Landscape
South African businesses commonly use a few ERP systems that are rarely covered by off-the-shelf Shopify integrations.
Sage. The most common ERP in SA small and medium businesses. Sage 50, Sage 200, Sage X3. Some have APIs. Some use database connections. Some use flat file exports. The integration approach depends heavily on which version you are running.
Syspro. Common in manufacturing and distribution. Has an API, but it is not always straightforward to work with. Syspro's data model is complex and the API documentation varies in quality.
Pastel (now Sage Pastel). Still widely used in SA. Limited API support in older versions. Integration often requires database-level access or export/import routines.
SAP Business One. Used by larger SA businesses. Has a well-documented API (Service Layer), but the complexity of SAP's data model means integration projects tend to be larger.
Xero and QuickBooks Online. Cloud-based accounting systems with good APIs. Not full ERPs, but many SA businesses use them as their primary business system. These are the easiest to integrate with Shopify because they were built for API-first connectivity.
The challenge with SA-specific ERPs is that most Shopify integration apps on the App Store are built for global ERPs (NetSuite, Microsoft Dynamics, SAP S/4HANA). They do not support Sage Pastel or Syspro. This is where custom integration work becomes necessary.
Off-the-Shelf vs Custom
Off-the-Shelf Connectors
Apps like Stock Sync, Pipe17, or Celigo offer pre-built connectors for popular ERPs. If your ERP is supported and your data mapping is straightforward, these can work.
When they work: Your ERP is a major global system. Your data mapping is simple (products, orders, customers). You do not need complex business logic during the sync. You are comfortable with the app's pricing model (often per-transaction or per-order fees that add up).
When they do not work: Your ERP is SA-specific. Your data mapping has business rules ("only sync orders over R500," "map product bundles to individual line items," "apply wholesale pricing based on customer group"). You need bidirectional sync with conflict resolution. You need the integration to handle your specific edge cases.
Zapier / Make
These are low-code automation tools. They can move simple data between Shopify and other systems using triggers and actions.
When they work: Simple one-way flows. "When a new order appears in Shopify, create a record in Google Sheets." Basic notifications and simple data transfers.
When they do not work: Complex data transformations. Error handling. Retry logic. High-volume data sync (Zapier charges per task, and a store doing 200 orders per day can burn through a plan quickly). Any scenario where data integrity is critical.
Custom Integration
A custom integration is middleware built specifically for your Shopify store and your ERP. It handles the data mapping, transformation, error handling, and monitoring that your business requires.
When this is the right choice: Your ERP is not supported by off-the-shelf tools. Your business rules during sync are specific. You need bidirectional sync with conflict resolution. Data integrity is critical. You want to own the integration rather than pay per-transaction fees indefinitely.
What to Expect
Timeline. A one-way order sync (Shopify to ERP) with a well-documented API typically takes 2 to 4 weeks. A bidirectional sync with inventory, customers, pricing, and error handling takes 4 to 10 weeks depending on complexity.
Cost. Custom ERP integration for Shopify ranges from R40,000 for a simple one-way sync to R200,000+ for a full bidirectional platform. The cost depends on the ERP's API quality, the number of data types synced, and the business logic required during transformation.
Ongoing maintenance. ERPs update. Shopify's API evolves. Data volumes grow. An integration is not a one-time build. Budget for ongoing monitoring and maintenance. A good integration includes alerting, logging, and a monitoring dashboard so you know immediately when something fails.
A Real Example
I built the integration between Truly Essential's Shopify store and their Exigo ERP system. The integration handles bidirectional data sync between the two platforms and runs at 99.9% uptime. Orders, customers, credit balances, and product data flow between Shopify and Exigo automatically.
The key was building proper error handling and retry logic. When the ERP is briefly unavailable (maintenance windows, network blips), the integration queues the data and retries. Nothing gets lost.
The Short Version
If your team is copying orders from Shopify into your ERP by hand, there is a better way. The right approach depends on your ERP, your business rules, and your data volumes. Off-the-shelf connectors work for simple scenarios with major global ERPs. SA-specific ERPs and complex business rules usually require custom integration work.
The hours your team spends on manual data entry every week is the cost of not integrating. Compare that to the cost of building the integration, and the decision usually makes itself.
If you are ready to stop copying orders by hand, let us talk about connecting your systems.