ERP Integration Webshop
SAP, Microsoft Dynamics & DATEV Connection

Professional ERP integration webshop is the key to efficient, error-free e-commerce processes. If your webshop and ERP system (SAP, Microsoft Dynamics, DATEV, Lexware) don't communicate seamlessly, you're wasting valuable time on manual data maintenance, risking out-of-sync inventory, and losing customers through delayed order processing.

ERP Integration Webshop refers to the technical connection of your online shop to your existing ERP system (Enterprise Resource Planning). The goal is automatic, bidirectional synchronization of data such as products, inventory, prices, orders, and customer data – in real-time or at defined intervals.

Modern webshop ERP connection is done via REST APIs, GraphQL interfaces, SOAP web services, or EDI (Electronic Data Interchange). The choice of integration method depends on your ERP system, business requirements, and IT infrastructure.

Without professional ERP integration webshop, webshop and inventory system work in isolation. This leads to:

With professional SAP webshop integration or Microsoft Dynamics webshop connection, these problems are a thing of the past.

Modern inventory system webshop integration is based on standardized API interfaces. Depending on the ERP system, various integration methods are available:

REST APIs are the modern standard for webshop ERP connection and offer numerous advantages for integration. Simple HTTP-based communication enables fast implementation, while the JSON data format is lightweight and easy to parse across all platforms. The stateless architecture makes REST integrations highly scalable and maintainable, as each request is independent and servers don't need to maintain session state. Webhooks enable event-based synchronization, allowing your webshop to react instantly to ERP changes. OAuth 2.0 provides secure authentication without exposing credentials, making REST the ideal choice for cloud-based ERP systems like Microsoft Dynamics 365 Business Central or modern SaaS solutions.

Ideal for: Modern ERP systems (Microsoft Dynamics 365, SAP Business One Cloud), Shopify Plus, Magento, WooCommerce

GraphQL enables precise data queries without over-fetching, revolutionizing how webshops communicate with ERP systems. Instead of multiple REST endpoints, GraphQL provides a single endpoint for all data queries, dramatically simplifying API management. Flexible queries allow you to fetch exactly the data you need, nothing more, nothing less, reducing bandwidth and improving performance. The type-safe nature through schema definition prevents runtime errors and provides excellent developer experience with auto-completion. Real-time subscriptions enable live updates when inventory changes, ensuring your webshop always displays accurate information. Batch requests optimize performance by combining multiple queries into a single HTTP request, reducing network overhead and improving response times in complex integration scenarios.

Ideal for: Headless commerce, complex data models, high-performance requirements

SOAP (Simple Object Access Protocol) is the enterprise standard for SAP ERP integration and DATEV connection, providing robust features that meet the strictest enterprise requirements. WS-Security standards ensure highest security requirements are met with message-level encryption, digital signatures, and token-based authentication. WSDL contracts provide strict API definitions that serve as binding agreements between systems, eliminating ambiguity and ensuring version compatibility. Transaction support with ACID guarantees ensures data integrity across distributed systems, critical for financial and inventory operations. Enterprise features like WS-Reliability and WS-AtomicTransaction provide message delivery guarantees and coordinated multi-step transactions, making SOAP the preferred choice for mission-critical SAP Business Suite integrations and DATEV financial system connections.

Ideal for: SAP ERP, DATEV, Microsoft Dynamics NAV, Sage 100

Between webshop and ERP system lies a middleware layer – the intelligent control center of your integration. It ensures:

Complete webshop ERP synchronization includes the following data flows:

ERP → Webshop (Master Data): • Product data (SKU, titles, descriptions, images) • Prices & discounts (incl. customer group prices) • Inventory (available quantity, warehouse location, delivery time) • Categories & attributes • Product availability & discontinued status

Webshop → ERP (Transactional Data): • Orders (order header + line items) • Customer information (B2B & B2C) • Payment information (payment status, transaction IDs) • Shipping information (shipping address, carrier) • Returns & credit memos

Bidirectional (Status Updates): • Order status (processing, shipped, delivered) • Tracking numbers & carrier updates • Return status • Payment status (paid, pending, failed)

The choice between real-time synchronization and batch processing depends on your business requirements:

Real-time Synchronization using webhooks and message queues provides immediate data consistency, ensuring inventory is always up-to-date across all systems. This approach delivers an optimal customer experience by preventing out-of-stock orders, as changes in ERP inventory are instantly reflected in the webshop. The event-driven architecture allows your systems to react immediately to changes, enabling features like dynamic pricing and instant order confirmation. However, real-time synchronization comes with higher complexity, requiring sophisticated error handling, retry logic, and monitoring infrastructure. Additionally, systems must be prepared for potential performance spikes during peak traffic periods, necessitating robust scaling strategies. This approach is ideal for B2C e-commerce with high order volumes and fast-moving products like fashion and electronics where inventory accuracy is critical.

Batch Processing through scheduled jobs and cronjobs offers simpler implementation without the need for complex webhook infrastructure, making it easier to set up and maintain. System load is predictable and controllable, as processing can be scheduled during off-peak hours to minimize impact on customer-facing operations. Bulk optimizations allow efficient processing of thousands of products in single requests, reducing API calls and associated costs. The trade-off is a synchronization delay, typically ranging from 5 to 60 minutes depending on your schedule frequency, which can lead to potential out-of-sync situations during that window. This approach is ideal for B2B e-commerce with lower order volumes and slow-moving products where real-time accuracy is less critical, and predictable system behavior is more important than instant synchronization.

Recommendation: Hybrid approach – critical data (inventory, orders) in real-time, master data (products, prices) via batch.

When connecting your warehouse management system, sensitive business data is transferred. Security is therefore top priority: