ECC to S4HANA Conversion - Brownfield Implementation

ECC to S4HANA Conversion - Brownfield Implementation

A brownfield conversion takes a living ECC system to S/4HANA. You work through the Basis conversion sequence: checks, SUM, downtime, and post-conversion cleanup.

The course is for consultants who will own the technical conversion, not only the functional delta.

Syllabus

  • ECC to S4/HANA Conversion - Brownfield Approach
    • Planning for S4/HANA Conversion
    • Readiness Check
    • SI Check
    • CVI and Document Splitting
    • Custom Code Migration
    • Planning for downtime
    • Technical Migration (DMO with/without System Move)
    • Post installation activities (ABAP+Basis)
    • Finance Migration
    • Go Live
  • ECC to S/4HANA - Program overview and learning outcomes
    • Role of SAP Basis in ECC to S/4HANA brownfield conversion
    • Conversion vs. release upgrade vs. greenfield implementation
    • Brownfield, greenfield, bluefield, and selective data transition
    • Typical conversion phases and Basis deliverables
    • Tools: Maintenance Planner, Readiness Check, DMO, SUM, SAP for Me
  • ECC to S/4HANA - Conversion landscape and prerequisites
    • Supported ECC source releases and target S/4HANA versions
    • Unicode requirement and code page considerations
    • SAP HANA sizing and hardware prerequisites for conversion
    • LMDB, Solution Manager, and landscape documentation
    • Sandbox / PoC system strategy (copy from PRD or QAS)
    • High availability, DR, and conversion sequencing (DEV -> QAS -> PRD)
  • ECC to S/4HANA - Project planning and conversion strategy
    • Planning for S/4HANA conversion (project structure and milestones)
    • DMO with System Move vs. DMO without System Move
    • Shell conversion vs. in-place / database migration patterns
    • Downtime vs. near-zero downtime conversion (overview)
    • Conversion runbook, rollback, and fallback planning
    • Coordination with functional, finance, security, and infrastructure
    • Go/No-Go criteria and cutover checkpoints
  • ECC to S/4HANA - Software logistics and Maintenance Planner
    • Maintenance Planner: conversion plan and download basket
    • Stack XML for conversion and dependency validation
    • DMO media, SAP Host Agent, and installation paths
    • License keys and entitlements for S/4HANA
    • Export control, checksums, and download verification
  • ECC to S/4HANA - Readiness Check and simplification inventory
    • Running Readiness Check and interpreting results
    • SI check and Simplification Item catalog (Basis perspective)
    • Current system inventory: ECC release, SP, kernel, database
    • SAP Note implementation for conversion path
    • Pre-conversion backup and recovery verification
  • ECC to S/4HANA - Source ECC system preparation
    • Housekeeping: spool, jobs, logs, disk space
    • Consistency checks: ST22, SM21, database checks
    • Deactivating interfaces and RFC destinations before cutover
    • User, batch job, and customizing freeze strategy
    • Transport freeze and import order before conversion
    • Planning for downtime (technical vs. business window)
  • ECC to S/4HANA - SAP HANA target database preparation
    • HANA installation or revision alignment for target S/4HANA
    • HANA backup, recovery, and snapshot concepts before DMO
    • Memory, tenant, and parameter checks for migration
    • hdblcm and database connectivity prerequisites for DMO
  • ECC to S/4HANA - DMO and SUM fundamentals
    • DMO architecture and supported conversion scenarios
    • SUM phases in conversion context (PREPARE, MIGRATE, UPGRADE)
    • Key DMO and SUM parameters (overview)
    • SUM/DMO directory structure, logs, and trace files
    • Resuming, restarting, and abort handling during DMO
  • ECC to S/4HANA - CVI, Business Partner, and document splitting
    • CVI and Business Partner conversion (overview for Basis)
    • Document splitting - awareness and Basis prerequisites
    • Master data migration validation support
    • Coordination with functional team during CVI activities
  • ECC to S/4HANA - Custom code migration and simplification
    • Custom Code Migration - analysis tools (RC_COLLECT, ATC overview)
    • Simplification database and blocked transactions (Basis view)
    • SPDD/SPAU and modification adjustment (overview)
    • Third-party add-on and industry solution compatibility
  • ECC to S/4HANA - Finance migration overview
    • Finance migration and Universal Journal (overview for Basis)
    • Finance Migration Cockpit - role split functional vs. Basis
    • Basis tasks during finance migration window
    • Post-migration finance validation support
  • ECC to S/4HANA - Technical migration execution (DMO)
    • Technical Migration (DMO with / without System Move)
    • Database migration execution and monitoring
    • Create sandbox (PoC) system by copying PRD VM (lab context)
    • Immediate post-DMO technical verification steps
  • ECC to S/4HANA - Post-conversion technical tasks (Basis)
    • Post installation activities (ABAP and Basis)
    • System start sequence, profiles, and services
    • Kernel switch, SPAM/SAINT, and sapcontrol verification
    • RFC, HTTP, and SSO smoke tests
    • Transport domain, client settings, batch jobs, and spool recovery
  • ECC to S/4HANA - Go-live and cutover
    • Go Live - technical cutover sequence
    • Dress rehearsal and mock cutover (overview)
    • Early hypercare monitoring and escalation
    • Stabilization period Basis tasks
  • ECC to S/4HANA - Security, integration, and Fiori after conversion
    • Authorization and role regression after conversion
    • Trusted RFC, SSO, and gateway security checks
    • PI/PO, IDoc, and background RFC verification
    • Fiori launchpad, Gateway, and OData activation checks
    • Performance monitoring: ST03N and HANA SQL (overview)
  • ECC to S/4HANA - Troubleshooting conversion errors
    • Reading SUM/DMO logs and common error codes
    • Space, permission, version, and compatibility failures
    • HANA migration-specific troubleshooting patterns
    • Restore from backup and rollback decisions
    • SAP Notes search and SAP Support escalation
  • ECC to S/4HANA - Documentation, audit, and hypercare
    • Conversion protocol and audit evidence
    • LMDB, CMDB, and runbook updates
    • Change records and CAB alignment
    • Handover to AMS / hypercare team
  • ECC to S/4HANA - Hands-on labs and assessment
    • Lab: Readiness Check results review
    • Lab: Maintenance Planner conversion stack
    • Lab: DMO prepare phase walkthrough
    • Lab: Post-conversion startup checklist
    • Lab: DMO/SUM log analysis exercise
    • Knowledge check: DMO options, phases, Basis checklist
    • Capstone: brownfield conversion runbook for one landscape