SAP ECC to S/4 HANA 2023 Conversion Part 1

SAP has announced that support for SAP ECC will officially end in 2027. After this date, SAP will no longer provide maintenance, updates, or technical support for the ECC system. This means that businesses using SAP ECC must plan their migration to SAP S/4 HANA to ensure continued access to support, updates, and new features.

For clients who are still using older ECC solutions, the question is clear: Should you convert to S/4HANA? My answer is a resounding yes. As a Solution Architect, the key consideration is the conversion approach you choose:

?GreenfieldImplementation: A fresh start with a new system.

?BrownfieldImplementation: Upgrading your existing system.

?BluefieldImplementation: A hybrid approach that blends both Greenfield and Brownfield.

?LiftandShift Process: Moving existing processes with minimal changesThe choice of approach depends heavily on your initial implementation, development strategies, and the number of RICEWFs and modifications involved. A thorough discovery analysis is essential to align with company goals and optimize costs.Let’s discuss the best path forward for your organization

@Katsiaryna Ustsinava for above valuable addition.

Key Points to Consider:

1. Upgrade Necessity: Organizations must upgrade to S/4 HANA to maintain support and take advantage of new functionalities, improved user interfaces, and advanced analytics capabilities.
2. Migration Planning: It’s crucial to start planning your migration strategy early, considering factors such as system requirements, customization, and data migration.
3. Implementation Approaches: Different migration strategies (Greenfield, Brownfield, Bluefield, Lift and Shift) can be employed depending on business needs.
4. Business Continuity: Migrating to S/4 HANA ensures your organization remains competitive and compliant with new technological advancements.
5. Long-Term Strategy: Beyond just the upgrade, companies should view this transition as an opportunity to rethink and optimize their business processes.

This article provides an overview of the SAP ECC to S/4 HANA Conversion process, outlining the various phases and essential steps involved in the conversion.

Conversion Phases

The conversion process is divided into several critical phases:

1. Pre-Requisites Phase
2. Prepare Phase
3. Realize Phase: SUM

Conversion Approaches

Different strategies can be employed for the conversion and migration, depending on specific business requirements:

1. Greenfield Implementation: Starting fresh with a new system.
2. Brownfield Implementation: Upgrading the existing system.
3. Bluefield Implementation: A hybrid approach that combines aspects of both Greenfield and Brownfield.
4. Lift and Shift Process: Moving existing processes with minimal changes.

Conversion Details

• ECC Version: SAP ECC 6.0
• Target S/4 HANA Version: S/4 HANA 2023 FPS 1

SAP ECC to S/4 HANA Conversion: Pre-Requisites Phase

Pre-checks

1. Source System Requirements:
2. UNICODE Requirements:
3. Conversion Types:
4. System Compatibility:
5. SUM Tool:

HANA Sizing

To ensure adequate sizing for HANA, implement the following SAP Notes:

• SAP Notes: 2816633 & 2913617
• Execute the report: /SDF/HDB_SIZING to determine HANA sizing requirements.

Note Implementation

Implement the latest versions of critical SAP Notes to prepare for readiness checks and simplification item checks:

• SAP Note 2758146: Readiness check for S/4 HANA.
• SAP Note 2399707: Simplification item check.
• SAP Note 2903677: Effort drivers for simplification item check.
• SAP Note 2502552: Simplification item check consistency.
• SAP Note 1872170: Enable S/4 HANA sizing.
• SAP Note 2721530: Enable data volume management analysis.
• SAP Note 3010669: Custom vendor integration.
• SAP Note 2185390: Custom code analysis.
• SAP Note 2769657: Enable IDoc analysis.

Pre-Analysis for S/4 HANA 2024 Version

Conduct analysis for the target S/4 HANA version:

• Release Information: SAP Note 3307222.
• Foundation Information: SAP Note 3306766.
• Fiori Release Information: SAP Note 3336823.
• Maintenance Strategy: SAP Note 2217489.
• Business Function Switches: SAP Note 2240359.

Add-ons

Before conversion, uninstall specific add-ons based on the Readiness Check Dashboard:

• Analyze the uninstalling of ABAP add-ons (SAP Note: 2011192).

Technical Downtime

Review technical downtime requirements as specified in SAP Note 2351294.

Readiness Check

The SAP Readiness Check is a crucial step in the conversion process. Implement the necessary SAP Notes and execute the relevant reports to assess the status of readiness and simplification items. Collaborate with both functional and technical teams for effective management of findings.

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