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LFS ISS

Also: LFS ISS, LFS-ISS, Lager-Führungs-System ISS, EPG LFS ISS

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In brief

LFS ISS is a warehouse management software by the vendor Ehrhardt Partner Group (EPG), deployed either as a standalone solution or in a SAP-adjacent environment to control warehouse processes such as putaway, picking, and inventory management.

Key facts

What is LFS ISS?

LFS ISS refers to a segment within the LFS product portfolio of Ehrhardt Partner Group (EPG). LFS stands for Lager-Führungs-System and is a well-established warehouse management solution on the market. ISS is used in this context as a product variant or integration layer that enables particularly close connectivity to SAP systems. The goal is to control warehouse processes directly from SAP environments without mapping the logic entirely within SAP itself. This positions LFS ISS between a classic, standalone WMS and a pure SAP EWM implementation.

How does LFS ISS work in practice?

In practice, LFS ISS handles operative warehouse control — that is, the execution of putaway, retrieval, and picking orders based on data originating from the connected SAP system. Communication between SAP and LFS ISS takes place via defined interfaces, typically through RFC calls or IDocs. In this way, SAP remains the leading system for master and transactional data, while LFS ISS takes over the warehouse execution logic. This includes storage location management, transfer order control, material flow integration, and communication with conveyor systems and picking solutions. The user interface can be operated on stationary terminals, mobile handhelds, or voice picking systems.

A key advantage of this architecture is the clear separation of functions: SAP manages inventory and orders at the commercial level, while LFS ISS controls physical warehouse operations in granular detail. This separation makes it easier to implement warehouse-specific requirements — such as complex slotting strategies or material flow control — without touching SAP core processes.

What matters when making a selection?

When deciding on LFS ISS or a comparable SAP-adjacent WMS solution, several aspects need to be evaluated:

  • Interface design: Which SAP releases and modules are supported? How are postings synchronized, and what latency times are acceptable?
  • Functional scope: Which warehouse strategies, conveyor system integrations, and picking methods are included as standard, and which require customizing?
  • Operating model: Is the solution operated on-premise, in a private cloud, or as a managed service? Who is responsible for release management and updates?
  • Responsibilities: Are accountabilities clearly defined between the SAP basis team, the WMS vendor, and the internal IT team — particularly in the event of a disruption?
  • License and maintenance costs: The cost structure varies considerably depending on the deployment model and module scope — a detailed TCO comparison is recommended.

Since product abbreviations such as ISS are vendor-specific and their scope of meaning may change with product versions, it is advisable to use functional descriptions rather than pure product names as a basis for comparison throughout the requirements process.

Frequently asked questions

LFS ISS refers to a product variant of the Lager-Führungs-System (LFS) by Ehrhardt Partner Group, designed for close integration with SAP systems. It controls operative warehouse processes such as putaway, picking, and material flow, while SAP maintains the commercial data.

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