S/4HANA Ready — Protect Your SAP Investment, Accelerate Your Migration
SAP ECC mainstream maintenance ends December 31, 2027. With 60% of S/4HANA migrations exceeding budget and schedule (Horvath 2025), and only 57% of ECC customers expected to complete migration by the deadline (Basis Technologies), the pressure is real. Every screen you've simplified, every workflow you've automated — Liquid UI carries it all forward to S/4HANA. No rebuilds. No retraining. No Fiori licensing.
The S/4HANA Migration Trap: Rebuild Everything or Lose Your Customizations
Organizations moving to S/4HANA face a painful choice: spend millions rebuilding every custom screen, workflow, and Fiori app from scratch — or go live with a degraded user experience that undoes years of productivity gains.
SAP has removed or consolidated hundreds of transactions in S/4HANA (Gambit Group) — documented across 1,482 pages and 63 chapters of SAP's official Simplification List. ABAP customizations, user exits, and BAdI enhancements tied to those transactions break. Fiori apps require completely new development. Productivity drops 20–30% for 4–6 weeks (Noel D'Costa) at go-live even without UI changes.
The cost of not having Liquid UI
- Fiori redevelopment costs — Premium Fiori apps cost ~$150/user (2-data.com) with 22% annual maintenance. For 10,000 users on a single premium app, that's over $1.5M in licensing alone — before you write a line of custom code.
- Retraining disruption — 70% of ERP rollouts fall short of expectations (McKinsey via Access.dev) (McKinsey), primarily due to user adoption and change resistance — not technology.
- Budget overruns — 60% of S/4HANA projects exceed budget and schedule (Horvath 2025), with projects taking 30% longer on average (Horvath 2025). 49% of organizations already live on S/4HANA reported costs exceeding budget (ASUG) (ASUG 2024).
Liquid UI eliminates the most expensive line item in your S/4HANA budget: the user interface rebuild.
Why S/4HANA Migrations Succeed with Liquid UI
Your Customizations Carry Forward
Every Liquid UI script you've built — simplified screens, merged transactions, role-based dashboards — works on S/4HANA exactly as it does on ECC. Zero rework. Zero retraining. Your users see the same interface on day one of go-live. In a world where SAP implementations cost $5,200–$7,600 per user (Noel D'Costa), avoiding the UI rebuild is the single highest-ROI decision in your migration.
Removed Transactions? Virtualized.
When SAP removes or consolidates transactions in S/4HANA — 338+ deprecated T-codes documented (SAP Community) from one ERP 6.0 conversion alone — Liquid UI virtualizes them. Users continue working in their familiar screens, but behind the scenes, Liquid UI routes to the new S/4 transaction. No disruption, no retraining.
Desktop, Mobile & Scanner — All S/4 Ready
Your entire deployment — SAP GUI desktops, iOS and Android devices, warehouse scanguns — migrates to S/4HANA in lockstep. The same scripts, the same server, the same NCA architecture. One platform, one migration. No separate Fiori mobile app builds, no months-long development cycles (Neptune Software) per transaction.
Transaction Virtualization — Users Never Know the Backend Changed
SAP has removed or merged hundreds of transactions in S/4HANA. The official Simplification List (1,482 pages, 63 chapters) (SAP Help) documents every change. Entire transaction families have been eliminated — all MB* transactions in Materials Management replaced by MIGO, all FD/FK/XD/XK customer/vendor masters consolidated into Business Partner (BP) (SAP Press).
For IT teams, this means broken processes. For users, it means confusion. Liquid UI solves both with transaction virtualization.
How it works
When a user launches a familiar transaction — say ME21 (Create Purchase Order) — Liquid UI intercepts the call and transparently redirects it to the equivalent S/4HANA transaction (ME21N or the new Fiori-based flow). The user sees exactly the same simplified screen they've always used. Behind the scenes, a completely different transaction is executing.
What this means for your migration
- No user retraining — the screen looks and works identically before and after migration. This is critical: McKinsey reports 70% of organizational changes fail due to employee resistance. Remove the change, remove the risk.
- No process redesign — your workflows continue unmodified
- No timeline impact — virtualization is configured in Liquid UI scripts, not SAP. The S/4 technical migration stays on schedule.
- Gradual transition — virtualize everything at go-live, then selectively update specific screens to S/4-native workflows on your own timeline.
One Customization — Desktop, Mobile, Scanner, Cloud
With Liquid UI, the same JavaScript-based scripts that simplify SAP GUI on the desktop also run on iOS, Android, and enterprise scanguns. When you migrate to S/4HANA, every platform migrates together — automatically.
Cross-platform S/4HANA readiness
- SAP GUI on Windows — in-process or server-based, your desktop customizations work unchanged on S/4
- iOS and Android — native apps via Liquid UI Server, supporting S/4HANA Cloud Private Edition, Cloud Extended Edition, and on-premise
- Enterprise scanguns — Zebra, Honeywell, and Windows CE devices continue working through the same server
- Barcode, GPS, camera, voice — all IoT integrations carry forward because they're scripted in JavaScript, not hard-coded to a specific SAP release
Why this matters for your budget: Only 57% of ECC customers will complete S/4HANA migration by end of 2027 (Basis Technologies) — meaning most organizations will run hybrid ECC + S/4 landscapes for years. Liquid UI Server connects to up to 4 SAP instances simultaneously, so users work in both systems from a single interface during the transition.
Every Dynpro Customization Carries Through to S/4HANA
Liquid UI operates at the SAP Dynpro screen level — the same presentation layer that both ECC and S/4HANA use. This is the fundamental architectural advantage: your customizations aren't tied to a specific SAP release, they're tied to the screen protocol itself.
What carries forward — automatically
- Simplified screens — hidden fields, reorganized layouts, role-based views
- Merged transactions — multi-step workflows consolidated into single screens
- Custom dashboards — KPI views, work queues, manager overviews
- Automation scripts — auto-populated fields, validation rules, guided workflows
- Third-party integrations — Excel, Salesforce, web services — all scripted at the UI layer
The alternative is painful: Organizations without a UI preservation strategy face rebuilding every custom interface. Enterprises like Evonik have 60,000+ custom objects (smartShift) requiring transformation. JBS spent 30,000 hours on code remediation alone. And ASUG reports that managing customizations is the #1 technical challenge in S/4HANA migrations.
With Liquid UI, your entire customization portfolio is an asset that migrates — not a liability that must be rebuilt.
Supported S/4HANA Deployment Scenarios — All Covered
S/4HANA On-Premise
Full Liquid UI support — Server and Desktop editions. All existing scripts, all transaction virtualizations, all mobile deployments work exactly as on ECC. Liquid UI Server connects via native DIAG protocol, same as SAP GUI.
Migration path: Point your existing Liquid UI Server at the new S/4 system. Scripts run immediately. Test, validate, go live.
S/4HANA Cloud, Private Edition
Fully supported. Liquid UI Server connects to your private cloud SAP instance via NCA, the same way it connects on-premise. Your cloud infrastructure team provisions the server in the same VPC/VNET — no special networking required beyond standard SAP GUI access.
Key benefit: You get cloud scalability without sacrificing any UI customization capability.
S/4HANA Cloud, Extended Edition
Supported for NCA-compliant connectivity. Liquid UI Server maintains end-to-end encrypted connections (TLS 1.3) to your Extended Edition environment. Mobile devices connect through the server — iOS, Android, and enterprise scanguns all supported.
Key benefit: Extend your cloud SAP to field workers and warehouse teams without building Fiori apps.
Hybrid (ECC + S/4)
Running ECC and S/4HANA in parallel during migration? Liquid UI Server connects to up to 4 SAP instances simultaneously. Users can work in both systems from a single interface — same scripts, same simplified screens, same login.
Key benefit: Migrate modules to S/4 one at a time while users experience zero disruption. This is the reality for most enterprises: SAP ECC mainstream maintenance ends December 31, 2027 (Rimini Street) (no extension), but with migrations averaging 18–36 months, parallel operation is the norm, not the exception. Liquid UI makes it seamless.
The 2027 Clock Is Ticking — Don't Rebuild Your UI
With SAP ECC maintenance ending December 2027 and 60% of migrations exceeding budget, eliminating the UI rebuild is the highest-ROI decision in your S/4HANA project. See how Liquid UI carries your entire customization portfolio forward — in 30 minutes.