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  SAP S/4HANA Migration Checklist in 2026 Most SAP executives don’t wake up in the morning eager to migrate to SAP S/4HANA. They migrate because it’s getting riskier and more expensive to stay on ECC every year, and because S/4HANA is where SAP’s innovation is happening as part of a broader SAP ECC upgrade strategy S/4HANA and SAP S/4HANA Migration strategy. The issue, however, is that SAP S/4HANA Migration projects tend to spin out of control: scope creep, custom code surprises, integration issues in testing, data messes, and a cutover plan developed too late. This post is a practical, “use-it-in-the-real-world” checklist for moving from SAP ECC to SAP S/4HANA as part of your SAP ECC upgrade roadmap S/4HANA. It’s written for project sponsors, IT managers, and delivery teams who want fewer surprises and a smoother go-live. What’s actually different in S/4HANA (vs ECC) A migration is not just a technical upgrade. Even if you choose a system conversion, SAP S/4HANA Migration change...