Your ERP is the backbone of operations, but it cannot do everything alone - it has to talk to your CRM, e-commerce, BI, and custom tools. SAP, Microsoft Dynamics 365, and Pantheon dominate Croatia and the region, and each has a very different integration profile. This guide compares options, typical costs, and how to avoid the usual traps.
SAP
The most powerful and most complex ERP to integrate with.
- RFC/BAPI - traditional, accesses SAP’s business logic directly. Requires deep SAP expertise.
- OData/REST via SAP Gateway - modern, easier, but coverage varies by module.
- SAP Integration Suite (CPI) - SAP’s own middleware with pre-built connectors.
- IDocs - reliable batch document exchange, not real-time.
Cost: €10,000-€40,000 for a serious integration; bi-directional projects can exceed €60,000. Timeline: 4-12 weeks.
Microsoft Dynamics 365
Mid-range complexity with the most modern API of the three.
- Dataverse API (REST/OData) - well-documented, covers contacts, accounts, orders, invoices.
- Power Automate - low-code for simple syncs; limited for complex logic.
- Custom connectors - Azure Functions or similar middleware where Power Automate runs out.
- Dual-write - real-time sync between Dynamics 365 and Dataverse.
Cost: €5,000-€20,000 per integration. Timeline: 3-8 weeks. Custom fields and plugins per instance create most of the edge cases.
Pantheon
The dominant ERP in Croatia and Slovenia, with a very different profile.
- REST API - covers core modules (items, documents, contacts, invoices); quality varies by module and version.
- Direct database access - common locally but not recommended: it voids support and creates data-integrity risk.
- File-based exchange (CSV/XML) - low-tech and reliable for batch.
- Pantheon Connect - newer integration platform; coverage is growing.
Cost: €3,000-€15,000. Timeline: 2-6 weeks. Documentation quality is the main wildcard.
Comparison
| Factor | SAP | Dynamics 365 | Pantheon |
|---|---|---|---|
| API quality | Variable | Good (Dataverse) | Variable |
| Ease of integration | Low | Medium | Medium |
| Cost per integration | €10k-€40k | €5k-€20k | €3k-€15k |
| Timeline | 4-12 weeks | 3-8 weeks | 2-6 weeks |
| Best fit | Enterprise | Mid-market | SME (HR/SI) |
Middleware vs point-to-point
Point-to-point is fine for one or two integrations and becomes a maintenance nightmare past five. If you have three or more systems exchanging data, run them through middleware (n8n, Make, or a custom broker) so each system connects to a hub, not to every other system.
For the mechanics underneath, see API integrations: how they work.
Frequently Asked Questions
Can we integrate Pantheon with SAP? Yes, via middleware. It is common in groups that use Pantheon locally and SAP for group reporting. The middleware translates data formats between the two.
What about error handling? Every integration must handle timeouts, format mismatches, and duplicates. Good builds log, retry, and alert a human when retries are exhausted. Budget 20-30 % of the integration cost for this.
Who maintains it after go-live? Ideally the team that built it, on retainer. APIs change, data models evolve, edge cases appear. Plan €500-€1,500/month for ongoing maintenance of 2-3 integrations.
Related Articles
- API integrations: how they work
- Accounting integrations for Croatian companies
- CRM and ERP implementation cost
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