ERP Integration Built to Handle Wholesale Volume

Every wholesale integration rests on three pillars that are tightly interconnected: product data and pricing, inventory management and order flow. When one pillar weakens, the entire system collapses. A price displayed differently in the shop than agreed in the ERP leads to complaints. Stock marked as available in the shop when it has already been picked in the warehouse leads to cancellations. An order arriving late in the ERP disrupts route planning. That is why we build integrations that serve all three pillars simultaneously and with equal reliability.

Price determination in wholesale is a multi-dimensional problem that regularly overwhelms standard integrations. A single article can simultaneously be subject to a list price, a customer group price, an individually negotiated contract price and a time-limited promotion. Add tiered prices with up to ten levels that adjust automatically based on order quantity, volume discounts that accumulate across multiple articles in a product group, and rebates that only apply above a certain annual revenue, and price determination becomes a calculation that must be accurately mapped in the middleware.

Our pricing module implements a multi-level hierarchy with clear priority rules: individual contract price beats customer group price, customer group price beats tiered price, tiered price beats list price. Promotional prices can override any level when explicitly configured as priority. In the cart, the buyer transparently sees which condition applies and what savings are achieved versus the list price. This transparency builds trust and significantly reduces enquiries to the inside sales team.

In wholesale, stock data determines revenue or cancellation. When an article shows as available in the shop, it must actually be in the warehouse. When it is being picked, the stock must be reduced immediately, not at the next batch run two hours later. And when a goods receipt replenishes stock, the article should be orderable again instantly, not after the next nightly import cycle.

We implement event-based inventory synchronization that reacts to changes in the warehouse management system, not to schedules. Every goods movement, whether receipt, picking, dispatch, return or transfer, triggers a sync event that updates shop stock within one to two seconds. For wholesalers with multiple warehouse locations, the system displays stock per warehouse and calculates estimated delivery time based on route planning. When an item is unavailable at the nearest warehouse but available at another location, the buyer is automatically informed and can choose a partial or alternative delivery.

A wholesale order fundamentally differs from a B2C purchase. It contains dozens to hundreds of line items, customer-specific article numbers alongside internal ones, buyer reference numbers, preferred delivery dates with time window booking, delivery instructions per line item and potentially an approval chain with multiple authorization levels. All this information must arrive completely and correctly in the ERP so that downstream processes, picking, route planning, invoicing, can proceed without manual intervention.

Our order middleware transforms the shop order into your ERP system's order format and ensures correct field mapping. Customer-specific article numbers are mapped to your internal SKUs, quantity units converted, conditions validated and delivery preferences checked against route planning. The resulting ERP order is fully editable and structurally indistinguishable from a phone-captured order. The order confirmation with all confirmed delivery dates and prices flows automatically back to the customer portal.

Many key accounts in wholesale use their own procurement systems and expect electronic data interchange via standardized formats. EDIFACT messages for orders (ORDERS), order confirmations (ORDRSP), dispatch advice (DESADV) and invoices (INVOIC) are prerequisites for the business relationship in many industries. Alternatively, we offer OCI punchout for direct connection to customers' SAP-based procurement portals.

EDI communication is managed through our middleware layer and embedded in the existing ERP integration. Incoming EDI orders are converted to shop orders and go through the same validation and processing pipeline as online orders. Outgoing EDI messages are generated automatically once the ERP completes the corresponding business transaction. A log documents every EDI exchange with send status, timestamp and message content for traceability and error analysis.

An ERP-shop integration in grosshandel is not a completed project but a permanent connection that must keep pace with updates from both systems. Our maintenance packages include proactive monitoring of all synchronization processes, timely adaptation to API changes and quarterly reviews of data quality and performance. Through automated contract tests, we detect breaking changes early and can react before production updates. This long-term perspective ensures your integration works reliably not only today but also in two years, keeping pace with your growing requirements.

Long-term support also includes adaptation to seasonal demands: during periods of high order volume, we scale synchronization capacity and monitor integration performance more intensively. This ensures your ERP-shop connection remains stable and reliable even during peak times.