What’s the success rate of SAP S/4HANA migrations?

Around 30-50% fully succeed without major overruns; most snag on data/code issues, per Gartner.

Brownfield vs Greenfield SAP S/4HANA migration—which is better?

Brownfield for stable setups wanting speed (60% faster timelines); Greenfield if processes need total refresh—pick via readiness checks.

How much custom code breaks in S/4HANA?

20-40% needs refactor or removal; scan early with ATC to cut unused 30% upfront.

⚙️ DevOps & Platform Eng

SAP S/4HANA Migrations: 30% Custom Code Cut Saved This Team Months—Real Tactics Inside

Teams waste millions on SAP S/4HANA upgrades that crumble post-go-live. One mid-size firm axed 30% unused code upfront, turbocharged performance, and dodged the usual pitfalls—here's their exact moves.

theAIcatchup Apr 09, 2026 4 min read

Flowchart of successful SAP S/4HANA Brownfield migration steps with performance metrics

⚡ Key Takeaways

Ax 30% unused custom code pre-migration to slash risks and time. 𝕏
Brownfield wins for stable systems but demands process tweaks. 𝕏
Test under real loads—issues hide until production hits. 𝕏

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#Brownfield approach #Brownfield conversion #HANA database #SAP S/4HANA #SAP S/4HANA migration #custom code refactor #custom code refactoring #enterprise ERP #enterprise ERP upgrade #migration strategies

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Originally reported by dev.to

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