The SAP S/4HANA conversion process involves migrating an existing SAP ERP system (ECC) to SAP S/4HANA. This is a system conversion (Brownfield approach) that retains existing data and configurations while upgrading the system to S/4HANA.

SAP S/4HANA Conversion Process Steps

1. Preparation Phase

Before starting the conversion, SAP provides tools to analyze the system and plan the migration.

✅ Readiness Check

  • Use SAP Readiness Check to analyze system compatibility, custom code, and required simplifications.
  • Identify obsolete transactions and required modifications.

✅ Custom Code Analysis

  • Use ABAP Test Cockpit (ATC) to check custom ABAP code compatibility.
  • Adapt or remove unused/obsolete code.

✅ Sizing and Hardware Check

  • Ensure that the system meets S/4HANA hardware requirements (HANA database, memory, CPU).
  • Use SAP Quick Sizer for estimation.

✅ Business Process Review

  • Analyze the impact of Simplification Items and business process changes.

2. Conversion Phase

This is the technical migration of the system to SAP S/4HANA.

🔹 Database Migration

  • Convert the database from SAP ECC (AnyDB) to HANA if not already on HANA.
  • Use SUM (Software Update Manager) with DMO (Database Migration Option) for database migration.

🔹 System Upgrade

  • Upgrade the existing system to the latest SAP NetWeaver version compatible with S/4HANA.
  • Convert existing GL, Asset Accounting, Credit Management, etc., to the new S/4HANA data model.

🔹 Data Conversion

  • Use SAP Migration Cockpit or custom programs to transform data structures to S/4HANA format.
  • Execute necessary finance-related conversions (FI/CO data migration).

3. Post-Conversion Activities

Once the system is migrated, validation and testing must be done.

✅ Functional Testing

  • Validate all business processes (Sales, Finance, Logistics, etc.).
  • Perform regression testing.

✅ Custom Code Adaptation

  • Adjust custom ABAP code using SAP S/4HANA-specific APIs and syntax changes.
  • Use SAP Fiori to replace obsolete transactions with new apps.

✅ Performance Tuning

  • Optimize HANA queries and performance tuning for improved efficiency.

✅ User Training & Go-Live

  • Educate end users on changes in UI, workflows, and new features.
  • After thorough testing, finalize the cutover plan and Go-Live.

Key Tools Used in the Conversion

  1. SAP Readiness Check – Pre-check tool for system compatibility.
  2. ABAP Test Cockpit (ATC) – Analyzes custom ABAP code.
  3. SAP Simplification Item Check – Identifies required adjustments.
  4. Software Update Manager (SUM) with DMO – Converts the database and upgrades the system.
  5. SAP Migration Cockpit – Helps in data migration.
  6. SAP Fiori Apps Reference Library – To identify relevant Fiori apps for replaced transactions.

Mail us on contact@anubhavtrainings.com

Website: Anubhav Online Trainings | UI5, Fiori, S/4HANA Trainings



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