SAP S/4HANA Migration / System Conversion
A system conversion—commonly called a brownfield migration—is the fastest way for enterprises running SAP ECC to transition to SAP S/4HANA while retaining existing processes, configurations, and historical data. This approach is ideal for organizations that want to modernize their ERP landscape without starting from scratch.
At GETR, we specialize in end-to-end S/4HANA system conversions that minimize business disruption, protect critical data, and deliver measurable business value.
What is SAP S/4HANA System Conversion?
System Conversion transforms an existing SAP ECC system into SAP S/4HANA by reusing current investments:
Retains master and transactional data
Preserves proven business processes
Reduces migration complexity compared to greenfield implementation
Provides a faster path to innovation with SAP S/4HANA
Our System Conversion Expertise
1. Pre-Conversion Assessment
SAP Readiness Check & custom code analysis
Business case preparation with ROI & TCO estimates
Infrastructure sizing & deployment model evaluation (On-Premise, Cloud, or Hybrid)
2. Conversion Execution
Database migration to SAP HANA
Technical system conversion using SUM (Software Update Manager)
Custom code remediation and simplification item checks
Process adaptation aligned with S/4HANA standards
3. Post-Conversion Optimization
Performance tuning & stabilization
SAP Fiori enablement for modern user experience
Data validation and reconciliation
Continuous improvement roadmap for future enhancements
Why Choose GETR for System Conversion?
Proven Methodologies – SAP Activate and industry accelerators for faster outcomes
Minimal Downtime – Strategies for near-zero disruption during migration
End-to-End Coverage – From assessment to go-live support and training
Global Delivery Model – 24×7 support from India, US, and LATAM centers
Cost Transparency – Flexible engagement models and <10% transparent margins
Business Benefits of System Conversion
Accelerated transition to S/4HANA with lower risk
Retention of critical historical data and processes
Improved performance and real-time analytics
Lower TCO and higher ROI with an optimized IT landscape
A future-ready ERP aligned with SAP’s long-term roadmap
S/4HANA Migration Approaches Compared
| Approach | Description | Best For | Pros | Cons |
|---|---|---|---|---|
| Greenfield Implementation | A fresh S/4HANA implementation from scratch with redesigned processes. | Companies wanting to re-engineer business processes and eliminate legacy complexity. | Clean slate, adopt SAP best practices, modernized architecture. | Longer timelines, higher cost, extensive change management. |
| Brownfield Implementation (System Conversion) | Converts existing SAP ECC system into S/4HANA, retaining data and configurations. | Companies looking for faster migration while preserving existing investments. | Retains historical data & processes, lower cost vs. greenfield, faster migration path. | Carries forward some legacy complexity, requires careful code & process remediation. |
| Bluefield Implementation (Selective Data Transition / Hybrid) | Mix of greenfield and brownfield; selectively migrate processes, modules, and data. | Enterprises seeking flexibility—retain what works, redesign the rest. | Balanced approach, phased rollout possible, optimized business processes with historical data. | More complex planning, requires advanced tools and expertise. |