What replaces BSEG in S/4HANA?

BSEG is replaced by the Universal Journal table ACDOCA in S/4HANA. BSEG still exists as a compatibility view, but ACDOCA is the single source of truth for all financial postings, combining FI and CO line items.

What happens to VBUP and VBUK in S/4HANA?

VBUP (item status) fields are merged into VBAP and LIPS. VBUK (header status) fields are merged into VBAK and LIKP. Both tables still exist as compatibility views but are no longer physically stored.

What replaces LFA1 and KNA1 in S/4HANA?

Both LFA1 (Vendor Master) and KNA1 (Customer Master) are replaced by the Business Partner table BUT000 in S/4HANA. The BP transaction replaces XK01/XD01. LFA1 and KNA1 exist as compatibility views.

S/4HANA Migration Guide

Which SAP ECC tables change in S/4HANA? This reference maps 52 commonly used tables to their S/4HANA status — replaced, merged, renamed, or unchanged.

52 All 25 Unchanged 23 Replaced 3 Merged 1 Deprecated

All BP 1 CO 4 FI 14 HR 2 MM 13 PM 3 PP 4 SD 11

Showing 14 table(s) in module FI — Clear filters

Migration Mappings (14)

ECC Table	Description	Status	S/4 Successor	Module	Notes
ACDOCA	Universal Journal Entry Line Items	Unchanged	—	FI	ACDOCA is the Universal Journal — the central table in S/4HANA Finance. It replaces BSEG, GLT0, FAGLFLEXA, COEP, and many other FI/CO tables.
ANLA	Asset Master Record Segment	Unchanged	—	FI	ANLA remains unchanged in S/4HANA. Asset Accounting is simplified but the master data table persists.
BKPF	Accounting Document Header	Merged	ACDOCA	FI	BKPF header fields are available in ACDOCA. BKPF itself still exists but ACDOCA is the primary table for reporting.
BSAD	Generated Table for View	Replaced	ACDOCA	FI	Cleared customer items table replaced by ACDOCA.
BSAK	Vendor Cleared Items (Secondary Index)	Replaced	ACDOCA	FI	Cleared vendor items table replaced by ACDOCA.
BSAS	G/L Account Cleared Items (Secondary Index)	Replaced	ACDOCA	FI	Cleared G/L items table replaced by ACDOCA.
BSEG	Accounting Document Segment	Replaced	ACDOCA	FI	BSEG is replaced by the Universal Journal ACDOCA in S/4HANA. BSEG still exists as a compatibility view but ACDOCA is the single source of truth. Key differences: ACDOCA combines FI and CO postings, includes profitability attributes.
BSID	Generated Table for View	Replaced	ACDOCA	FI	Customer open item tables (BSID/BSAD) replaced by ACDOCA. Use CDS views I_JournalEntry or I_OperationalAcctgDocItem for access.
BSIK	Generated Table for View	Replaced	ACDOCA	FI	Vendor open item tables (BSIK/BSAK) replaced by ACDOCA.
BSIS	G/L Account Open Items (Secondary Index)	Replaced	ACDOCA	FI	G/L open item tables (BSIS/BSAS) replaced by ACDOCA.
FAGLFLEXA	General Ledger: Actual Line Items	Replaced	ACDOCA	FI	New GL line item tables (FAGLFLEXA, FAGLFLEXT) replaced by ACDOCA.
FAGLFLEXT	New GL: Totals	Replaced	ACDOCA	FI	New GL totals table replaced by ACDOCA. Totals computed on-the-fly.
GLT0	Generated Table for View	Replaced	ACDOCA	FI	GLT0 totals table eliminated. All totals computed on-the-fly from ACDOCA.
SKA1	G/L Account Master (Chart of Accounts)	Unchanged	—	FI	SKA1 remains unchanged in S/4HANA.

About S/4HANA Table Migration

When migrating from SAP ECC to S/4HANA, many database tables undergo significant changes. The most impactful change is the introduction of the Universal Journal (ACDOCA), which replaces dozens of FI and CO tables (BSEG, GLT0, FAGLFLEXA, COEP, and more). In Sales & Distribution, status tables like VBUP and VBUK are merged into their parent tables (VBAP/VBAK). The Business Partner (BUT000) replaces separate customer (KNA1) and vendor (LFA1) master records.

This migration guide helps SAP developers and consultants identify which tables change and find their S/4HANA successors. Each table links to its detailed CDSee page with fields, CDS views, and lineage information.