SAP TUTORIALS-
SAP S/4HANA Migration? Phase 1 To 9 Step-by-Step Detailed Guide
Introduction-
✅Complete SAP S/4HANA Migration Process: Phase 1–9 Full Implementation Guide-
SAP S/4HANA migration is one of the most important subject in the SAP world-wide now a Days.Also Many questions in mind But what is this migration? Why is it needed? And what are the steps involved?
Many companies are moving from older SAP systems Example- SAP ECC 6.0 (SAP ERP 6.0) to the new SAP S/4HANA system.
SAP S/4HANA?-SAP S/4HANA is the latest ERP (Enterprise Resource Planning) system from SAP
SAP – The company name.
S – Simple.
4 – 4th generation.
HANA – High-Performance Analytical Appliance.
SAP S4 HANA SAP – The company name, S – Simple, 4 – 4th generation, HANA – High-Performance Analytical Appliance...Migration means moving from the current system
(like SAP ECC) to the new SAP S/4HANA system.
✅Main Benefits of Migrating:-
1)-Real-time analytics and reporting:-
2)-Faster data processing:-
3)-Easy integration with cloud and AI tools:-
✅ Phase 1: Planning and Assessment-
1) ✅ -Step 1: Understand Your Current Landscape:-
-Identify your SAP ECC version (e.g., ECC 6.0 EHP 8).
-Note OS, database (Oracle, SQL Server, DB2, etc.), and system size.
-Identify custom developments (Z-programs, enhancements, user-exits).
-List all add-ons and interfaces with external systems.
✅ Use This Tools:-
-SAP System Data Browser (SE16N):-
-ST03N (workload statistics)
-SM13, SM37 (batch jobs)
2) ✅ Step 2: Run SAP Readiness Check:-
-Go to SAP Note 2290622 → download Readiness Check 2.0.:-
-Run in your ECC system:-
-Add-on compatibility,Business function usage,Simplification items,Custom code impact,Recommended S/4HANA version,
3) ✅ Step 3: Run SAP Readiness Check:-
-SAP Note 2502552 (Simplification Item Check).
-Identifies deprecated or changed data models (e.g., classic GL → Universal Journal).
4) ✅ Step 4: Run SAP Readiness Check:-
-Greenfield- New install, migrate selected master + open transactional data only
-Brownfield- Convert existing ECC system in place.
-Hybrid- Selective data transition.
5) ✅ Step 5: Define System Landscape & Sizing:-
-Choose deployment: On-Premise, RISE with SAP (Private Cloud), or Public Cloud.
-Use SAP Quick Sizer Tool to estimate HANA memory, CPU, and disk requirements.
-Plan environments: DEV, QA, PRD, and Sandbox.
✅ Phase 2: Preparation-
6) ✅ Step 6: Technical Preparation:-
-Update your ECC to SAP ERP 6.0 EHP 7/8.
-Convert to Unicode (mandatory for HANA).
-Maintain latest SPAM/SAINT, ST-PI, ST-A/PI components.
-Check and clean obsolete data (archiving).
✅Note Key- It Can Be 📌 Tools Used:- 1)-SAP Readiness Check , 2)-SAP Transformation Navigator 3)-SAP Migration Cockpit 4)-ABAP Test Cockpit (ATC)
7) ✅ Step 7: Maintenance Planner:-
-Open maintenanceplanner.sap.com.
-Connect your ECC system to the SAP Solution Manager LMDB.
-Plan the target product version (e.g., S/4HANA 2023 FPS1).
-Generate stack.xml file (input for SUM tool).
8) ✅ Step 8: Backup and System Copy:-
-Perform full database + file system backup.
-Create sandbox copy for dry-run conversion testing.
✅ Phase 3: Preparation-
9) ✅ Step 9: Use Software Update Manager (SUM) with DMO:-
-DMO = Database Migration Option – combines system upgrade + DB migration + Unicode conversion.
✅ -Execution All Steps:
1)-Copy stack.xml (from Maintenance Planner) to /usr/sap/
2)-Run SUM (via ./SUM/STARTUP).
3)-Choose DMO scenario./b>
4)-SUM performs:- Pre-checks,Software update,DB migration (to HANA),Shadow instance creation,Downtime execution phase,Post-processing, Then-Monitoring: via SUM UI (port 1129).
10) ✅ Step 10: Post-Migration Database Validation:-
-Use transaction DBACOCKPIT to check database statistics.
-Run consistency checks (RSPARAM, DB02)..
-Verify user authorizations, background jobs.
✅ Phase 4: Data Migration-
11) ✅ Step 11: Migrate Master Data & Transactional Data:-Tools
-SAP Migration Cockpit (LTMC) or Fiori App (F3473).
-SAP Data Services (BODS) for complex ETL.
-SAP Information Steward for data quality.
- Main Key Objects:
-Business Partner (master),Materials (MARA),Vendors/Customers (KNA1/LFA1 → BP),GL Accounts, Cost Centers, Profit Centers,Open POs/SOs, Balances
12) ✅ Step 12: Validate Migrated Data
-Run reconciliation between ECC and S/4HANA:- Check Trial Balance (F.01 vs FAGLB03),Open items (FBL1N/FBL3N/FBL5N), Then Check Stock quantities (MB5B/MB52)
13) ✅ Step 13: Validate Migrated Data
-Run reconciliation between ECC and S/4HANA:- Check Trial Balance (F.01 vs FAGLB03),Open items (FBL1N/FBL3N/FBL5N), Then Check Stock quantities (MB5B/MB52)
✅ Phase 5: Custom Code Migration-
13) ✅ Step 13: Custom Code Analysis
-Run ABAP Test Cockpit (ATC) with S/4HANA compatibility checks.
- Check- Obsolete functions (e.g., BSEG access, index tables).
- Check- Code using removed transactions..
- Check- HANA incompatibility (native SQL, non-Open SQL).
14) ✅ Step 14: Custom Code Adaptation
-Use SAP ADT (ABAP Development Tools) in Eclipse.
-Adapt or redesign custom objects.
-Retire unused Z-objects > 5 years old.
✅ Phase 6: Functional Adaptation-
15) ✅Step 15: Simplification Checks
-Business Partner (BP) replaces Customer & Vendor master.
-Universal Journal (ACDOCA) replaces all classic FI/CO tables.
-Material Ledger (mandatory) for inventory valuation.
-Credit Management (FSCM) replaces classic credit control.
-Profit Center Accounting integrated in GL.
16) ✅Step 16: Configuration Adjustments
-Activate new S/4HANA Business Functions via SPRO.
-Adjust number ranges, posting periods, and field status groups.
-Reconfigure logistics integration with FI (posting categories).
17) ✅Step 17: Fiori App Deployment
-Install SAP Fiori Launchpad (Gateway Front-End Server)..
-Assign catalogs & groups to roles..
-Test core apps: My Inbox, Manage Purchase Orders, etc.
✅ Phase 7: Testing-
18) ✅Step 18: Unit Testing-Developers validate each module separately.
19) ✅Step 19: Integration Testing-Cross-module testing (MM-FI, SD-CO, PP-MM).
19) ✅Step 20: User Acceptance Testing (UAT)-Business users validate end-to-end processes. also Document all deviations & fixes.
✅ Phase 8: Go-Live & Post Migration
21) ✅Step 21: Cutover Plan
-Freeze transactions in ECC.
-Take final delta data extract.
-Perform cutover weekend activities (stop batch jobs, lock users).
22) ✅Step 22: Go-Live
-Switch to S/4HANA PRD.
-Unlock users, schedule background jobs, and verify interface connectivity.
23) ✅Step 23: Post-Go-Live Support
-Monitor performance via ST02, ST03N, SM50, DBACOCKPIT.
-Hypercare period ≈ 4 weeks.
-Continuous improvement + user training.
✅ Phase 9: Continuous Optimization
24) ✅Step 24: Enable Innovation
-Adopt AI/ML integration, predictive analytics, and embedded BPC.
-Leverage SAP BTP extensions.
-Display G/L Account Balance Display-FAGLB03
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