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S/4HANA

The next-generation ERP: the simplified core on HANA, the Fiori UI and the 2027 ECC deadline that makes migration the project of the decade.

FOCUS · THE MIGRATION FROM ECCBrownfield, greenfield or bluefield: the right route is chosen with data, not slogans
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YoctoIT material for clients and partners · SAP, S/4HANA, HANA, BTP and the other products mentioned are trademarks of SAP SE o di sue affiliate.
01 · What it is

SAP S/4HANA, made clear.

S/4HANA rewrites the ERP core on the HANA database: simplified tables (goodbye aggregates), rethought processes and the Fiori experience. With ECC support expiring (2027, paid extensions), every SAP company faces the same question: how and when to migrate.

2027
end of ECC mainstream maintenance: the countdown is real
−60%
the order of magnitude of data model simplification (source: SAP)
Fiori
the modern user experience: roles, apps, mobile
SAP S/4HANA
OFFICIAL SAP BRANDING · S/4HANA
INTERFACCIA REALE · S/4HANA DOCUMENT & REPORTING COMPLIANCE · FONTE: SAP NEWS
REAL INTERFACE · S/4HANA DOCUMENT & REPORTING COMPLIANCE · SOURCE: SAP NEWS
02 · How to use it well

The things that make the difference.

The three routes

From ECC to S/4HANAthe unavoidable journey
Brownfield · convert
Greenfield · new
Bluefield · selective
history · clean slate · compromise
Readiness check & custom codethe analysis that decides the route
HANA + (spesso) IBM Powerthe technical base of the journey
There is no THE migration: there is yours

A real readiness check

Simplification items, custom code, data: the snapshot that turns debate into a plan.

Custom code triage

Z-code must be measured: how much is actually used? Half is often thrown away, and the project slims down.

Technical conversion

Brownfield is a serious Basis+DB project: DMO, optimized downtime, dress rehearsals.

After go-live

Fiori adoption, embedded analytics and continuous improvement: S/4 pays off later, if you cultivate it.

03 · In depth

What really changes in the core

S/4HANA rewrites the heart: MATDOC replaces dozens of inventory tables (aggregates computed on the fly), ACDOCA unifies FI and CO in the Universal Journal, the Business Partner replaces customer/vendor, MRP Live runs in HANA. Conversion (brownfield) goes through Readiness Check, Simplification Item Check, Custom Code Migration (ATC) and SUM/DMO with optimized downtime; greenfield restarts from Best Practices and Activate.

  • ACDOCA — Universal Journal: FI and CO in a single table — structural reconciliation, not batch
  • MATDOC — next-generation material ledger: real-time inventory without aggregate tables
  • Business Partner — mandatory: CVI (customer-vendor integration) is prepared BEFORE the conversion
  • Custom code (ATC) — Z-code analyzed with ABAP Test Cockpit: what to adapt, what to discard
  • Fiori & CDS — role-based apps on Core Data Services: the ERP used from the browser
  • Optimized downtime — DMO with downtime-optimized approach and dress rehearsals: the cutover in a weekend
04 · Numbers and lifecycle

The numbers that matter.

2027
end of ECC mainstream (2030 paid): the window is closing
7+2
years of maintenance per S/4 on-prem/private release
−60%
the order of data model reduction (aggregates eliminated)
3
the routes: brownfield, greenfield, selective (bluefield)
Conversion is a Basis+functional+data project: Readiness Check, dress rehearsals and cutover with us directing — the right weekend, no surprises.
05 · Use cases

Where it really pays off.

Conversion from ECC

Company history preserved, new platform.

New implementations

Greenfield to restart from standard processes.

Group two-tier

HQ on private, subsidiaries on public: consistent but proportionate.

2027 is not negotiable: the migration plan is — let's build it before urgency dictates it.