S/4HANA migration scoped around the supply chain that has to keep running.

The right migration path depends on how much of the current logistics process design is worth keeping. We assess the existing ECC landscape — custom logic, process debt, data quality — against the target operating model to recommend greenfield, brownfield or a selective data migration approach, including where a RISE with SAP-managed infrastructure model fits the target architecture and where it doesn't.

• Greenfield: process redesign on S/4HANA standard, used where legacy configuration has drifted far from current operations
• Brownfield: technical conversion of the existing system, used where the process design is sound and the goal is the platform move
• Selective data migration: object and company-code level migration for phased or carve-out scenarios
• Infrastructure and operating model assessment, including RISE with SAP as one deployment option among others

S/4HANA changes core logistics data structures and transactions — MRP Live, embedded EWM and TM, the Advanced Available-to-Promise model, simplified material and stock data. We use the migration as the point to redesign supply chain processes against these structures rather than replicating ECC-era workarounds on the new platform.

• MRP and planning process redesign around MRP Live and simplified planning logic
• Inventory and stock management simplification on the new data model
• Evaluation of embedded EWM and embedded TM against standalone deployment for the target landscape
• Order-to-cash and procure-to-pay process alignment where they intersect logistics execution

A migration is rarely a single-system event — warehouse control systems, transportation carriers, EDI networks, planning tools and BTP extensions all connect to the ERP core. We map the existing integration landscape, assess which interfaces move as-is, which need redesign for S/4HANA's APIs and data model, and which should be replaced with SAP BTP-based integration.

Custom ABAP built up over years of ECC use is often concentrated in logistics-relevant objects — MRP exits, delivery and shipment enhancements, custom movement types, warehouse and transportation user exits. We run simplification-item and custom-code analysis focused on these objects, then remediate or retire code based on what S/4HANA standard now covers.

• Simplification-item analysis scoped to logistics and supply chain objects
• Custom code impact assessment for MRP, inventory, delivery and transportation enhancements
• Remediation, retirement or redesign decisions made object by object, not as a blanket rewrite

We plan cutover around the reality of continuous logistics operations — open orders, in-transit deliveries, active warehouse and transportation processes — rather than a clean system boundary. Interface testing, data reconciliation and hypercare support are scoped to the operational risk in supply chain, not just financial close.

• Interface and integration testing across warehouse, transportation and planning systems
• Cutover sequencing that accounts for open logistics documents and in-flight execution
• Hypercare support focused on supply chain stabilisation, not just technical monitoring