SAP S/4HANA migrations have a mixed track record. Analyst research consistently shows that a significant proportion run over budget, over schedule, or both. But the reasons are rarely the technology. They are almost always people, process, and data problems.
Pitfall 1: Dirty Data
Legacy SAP systems accumulate years of data debt duplicate vendor records, inactive cost centres, inconsistent material master data. Migrating this into S/4HANA without a rigorous cleansing programme simply moves the problem into a new system. Data migration should begin 12–18 months before go-live, not 3 months before.
Pitfall 2: Treating It as a Technical Upgrade
S/4HANA migration is a business transformation, not a database lift-and-shift. Organisations that frame it as purely technical typically underinvest in business process redesign and change management and then wonder why user adoption is poor post-go-live.
Pitfall 3: Scope Creep
S/4HANA is a genuinely better platform and it's tempting to redesign every process simultaneously. Resist. Define your MVP scope ruthlessly. Improvements that aren't essential for go-live can follow in subsequent waves.
Pitfall 4: Under-resourced Testing
Integration testing, regression testing, and performance testing all need dedicated resource and adequate time. Compressed testing phases are the single biggest predictor of go-live instability. Budget for at least two full integration test cycles before cut-over.
What Good Looks Like
The migrations that succeed share common traits: executive sponsorship with teeth, a dedicated business workstream running alongside the technical programme, a data migration strategy that starts early, and a structured hypercare plan post go-live. Techelogy has delivered SAP migrations of all scales we can help you build the programme foundation that makes success predictable rather than hopeful.