SAP WM to EWM Migration
get your warehouse ready before WM support ends in 2027
Why migrate now
What the end of SAP WM support means
SAP has announced the end of mainstream support for WM and is replacing it with EWM, which is now part of S/4HANA. After support ends you'll be left without new fixes or security updates. And every additional year only makes the migration more expensive and complicated.
The move isn't just a technical swap. EWM uses a different data model and process logic, so the migration is also an opportunity to clean up warehouse processes that have limped along on workarounds for years. The earlier you start, the more time you have for calm testing and training.
How the migration works
Five phases from analysis to stable operation
Analysis of the current state
We map your existing WM processes, integrations, and customisations. The result is a clear picture of what can be carried over and what needs to be redesigned.
Target solution design in EWM
We design your warehouse processes and structure in EWM. Together we decide between Embedded and Decentralized EWM based on volume and operational complexity.
Data and configuration migration
We prepare the conversion of master data, warehouse structures, and stock. We set up EWM and its integrations with surrounding modules (MM, SD, PP, QM).
Testing and training
We validate the processes on real-world scenarios and train both key-users and operators so the switch isn't a leap into the unknown for your team.
Cutover and post-go-live support
We plan the cutover to keep downtime to a minimum. After go-live we stay close at hand and keep developing the system.
What to watch out for during migration
Where projects most often stumble
Migrating from WM to EWM is not a one-click upgrade. These are the areas worth paying attention to from the very start.
A different data model
EWM handles data differently from WM. Blindly copying configuration won't work, so processes need to be designed in EWM's own logic.
WM customisations and workarounds
Years of accumulated tweaks and workarounds need to be reviewed. EWM covers some of them as standard; others must be redesigned.
Cutover and downtime
Switching a live warehouse to a new system requires a careful cutover plan to keep operational downtime as short as possible.
Team readiness
Operators and key-users will face a new interface and procedures. Without training, even a well-designed migration shows up as a drop in performance during the first weeks.
Frequently asked questions
By when do we have to migrate from SAP WM to EWM?
SAP is ending WM support in 2027. We recommend starting early. A migration is usually a project measured in months, not weeks, and the closer to the deadline, the busier the available capacity on the market.
How long does a migration take?
It depends on the size and complexity of the warehouse, the number of integrations, and the degree of customisation. Smaller warehouses typically take 3 to 6 months, complex operations usually 9 to 12 months. You'll get a realistic estimate after the initial analysis of your current state.
Can we combine the migration with a move to S/4HANA?
Yes, and it often makes sense. EWM is part of S/4HANA, so the warehouse migration can be tied to a broader S/4HANA transition to take advantage of the synergies.
What happens to our WM customisations?
We assess each customisation individually. EWM covers some functionality as standard; the rest we redesign in EWM's logic. The goal is to rely on the standard as much as possible.
