Häufig gestellte Fragen
What is a WMS and what is it used for?
A WMS (Warehouse Management System), in German Lagerverwaltungssystem, is software for the bin-level control, management and optimisation of all warehouse processes from putaway to goods issue. It digitally maps the physical warehouse structure with zones, racks and individual bins and manages stock levels and material movements in real time. Unlike a mere inventory list, the system actively makes decisions, for example which bin is optimal for a putaway or in which order picking tasks should be processed to shorten travel distances. The VDI guideline 3601 describes the tasks and requirements of a WMS and distinguishes it from simpler inventory management systems.
What is the difference between a WMS, an LVS and ERP warehouse management?
The terms Warehouse Management System (WMS) and Lagerverwaltungssystem (LVS) are usually used synonymously in practice; according to VDI 3601, the subtle difference is that an LVS focuses on pure inventory and bin management, while a WMS additionally comprises strategies for controlling and optimising the entire in-house material flow. The warehouse functions of an ERP system, by contrast, primarily cover the commercial view of stock and are not designed for the high transaction frequency and real-time control of day-to-day warehouse operations. A WMS therefore complements the ERP with operational, bin-level fine control, while the ERP retains commercial data sovereignty. In many mid-sized companies, warehouse management starts in the ERP module and is only replaced or supplemented by a dedicated WMS as complexity grows.
Is ERP warehouse management enough, or do I need a dedicated WMS?
As long as warehouse volume and process requirements are manageable, there is a single site and simple putaway and retrieval strategies suffice, the warehouse module of an ERP system is generally sufficient. A dedicated WMS becomes worthwhile when throughput, complexity or criticality rise significantly, for example with many thousands of items, several warehouse sites, pronounced seasonal peaks or the use of automated conveyor, sorting and robotics technology. Demanding picking methods such as pick-by-voice, pick-by-light or wave picking also argue for a specialised solution, as ERP-internal warehouse functions usually do not cover them. A sound decision always requires a look at the individual volume structure, the degree of automation and the company's strategic IT roadmap.
What does a WMS cost to purchase and operate?
Costs vary widely with warehouse size, functional scope and degree of automation and can therefore only be given in rough ranges. Lean cloud or SaaS solutions for smaller warehouses sometimes start in the low double-digit euro range per user per month, while common mid-market solutions frequently cost around 100 to 500 euros per user per month, usually including updates and hosting; on-premise licences run to a one-off five- to six-figure sum depending on size class. Importantly, the pure licence or subscription fees often account for only the smaller part of the total budget, since implementation, customizing, interfaces, training and data migration frequently cause the larger share of project costs in practice. Over a multi-year view, a cloud solution is usually cheaper at smaller user counts, while on-premise can only pay off from higher user counts with in-house IT and stable processes.
Which WMS vendors are common in the DACH region?
In the DACH region and internationally, well-known providers include SAP Extended Warehouse Management (SAP EWM), Manhattan Associates, Blue Yonder and Infor, complemented by the WMS arm of the Körber Group, which through acquisitions brought several former brands such as HighJump and inconso under one roof and has operated under the name Infios since 2025. In the German-speaking market, specialised solutions such as LFS from Ehrhardt Partner (EPG), viadat from Viastore, PSI Logistics, Mecalux Easy WMS and other mid-market and cloud-native systems are also widespread. The DACH market is considered more fragmented than the US market, with numerous industry-specialised providers. Which solution fits depends less on the brand name than on volume structure, degree of automation and the quality of the ERP interface; the details should be verified with the respective vendor before making a selection.
How is a WMS connected to the ERP system?
The connection is typically made via an event-driven interface, often via REST API for real-time communication, via EDI for standardised document transfers, or via a middleware platform in complex multi-system scenarios. The ERP hands over orders, master data and purchase orders to the WMS, while the WMS reports back postings, stock changes and shipping data, so that the ERP retains commercial data sovereignty and the WMS carries the operational warehouse logic. A clean, event-driven integration avoids duplicate data maintenance, media discontinuities and stock discrepancies and is considered one of the most important selection criteria. The specific implementation depends on the ERP system in question, the processes to be mapped and the interface architecture of both systems.