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This page explains Phase 2 of the FIT Prototype for SAP S/4HANA for practitioners who want a clean, reliable financial backbone before touching build. In short, this phase exposes the four financial control points that decide whether your system tells the truth or fabricates a convenient myth. It matters because incorrect financial foundations contaminate every downstream scenario, from stock valuation to cost allocation. Use it when validating a sandbox or preparing a rapid prototype, and avoid it when you assume “SAP standard is probably fine” without checking who touched the system before you arrived.
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Step 02-01: Why do we copy the Chart of Accounts?
Step 02-02: Why Posting Period Variant makes sure your financials can be trusted?
Step 02-03: Why do posting periods need to be opened?
Step 02-04: Why Field Status Variants decide whether your financial data tells the truth?
Phase 2 exists for one purpose: you cannot build clarity on top of ambiguity.
The four financial checks in this phase act like an airport security scan - quiet, clinical, unforgiving. They catch structural weaknesses early, before postings start misbehaving and everyone pretends not to know why.
A prototype is only as honest as the ledger beneath it. Phase 2 strips out wishful thinking and confirms whether your system is ready to behave like a real business instead of a demo dressed in borrowed clothes.
Each check uncovers a different truth about system integrity:
Chart of Accounts copy
Reveals whether your financial backbone is yours or a shared toy box full of other people’s experiments.
Posting Period Variant
Reveals whether time in your system is linear, or whether users can casually post February invoices into April because no-one locked the doors.
Open Posting Periods
Reveals whether the business calendar is deliberate or accidental - crucial for anyone who prefers audits without plot twists.
Field Status Variants and Groups
Reveals whether SAP enforces complete data or simply hopes users remember which fields matter.
Together, the checks answer a blunt question: