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Brownfield migrations from SAP ECC HR to SuccessFactors are deceptively complex. Unlike greenfield implementations, you carry years of customisation, embedded business logic, and data dependencies. This field-tested checklist — written from the perspective of a Solution Architect who has navigated these journeys — covers everything from Discovery and Data Migration to Parallel Payroll, Cutover Planning, and Post Go-Live Stabilisation. Use it as your structured companion throughout the project.
