The group reporting preparation ledger helps you integrate accounting with group reporting at the accounting level more tightly. The group reporting preparation ledger is the source of information for the integration between General Ledger accounting and group reporting.

Benefits of the Direct Integration of General Ledger Accounting and Group Reporting
Each consolidation version is linked to one accounting ledger, that is, the leading ledger. Customers have the option to implement the group reporting preparation ledger. The main reasons to implement the preparation ledger are:
Group reporting fields are populated in the ACDOCA table at the time of the G/L posting.
Consolidation units and FS items can be derived via substitution logic.
Get real-time aggregated group reporting data in accounting.
Improved response time and performance.
New universal journal validation task.
Release accounting data in special periods into group reporting special periods.
Realignment of group reporting in accounting and accounting balance carry-forward.

If you want to use real-time financial data from accounting (ACDOCA) for consolidation, you must define a preparation ledger. It provides direct access to group reporting data directly during accounting entry. As a result of the activation, specific consolidation fields are already derived in the posting transaction.
You can define both a standard ledger or an extension ledger as preparation ledger.
The following group reporting relevant fields that are updated in ACDOCA include:
Consolidation unit
Consolidation company
Partner unit
Consolidation COA
Financial statement item
Consolidation subitem category
Consolidation subitem.
In the public cloud, basic ledger definitions must already be defined in the initial scoping phase because subsequent changes to the ledger setup after the go-live are technically severely restricted or impossible.