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Use
The initial data must be accurate before starting to transfer operational documents via realtime update to the consolidation processing ledger, the consolidation staging ledger, or the rollup ledger (all of which are referred to as "consolidation ledgers" in this text). This concerns both the initial data (legacy data) and the account assignments that are specifically needed for consolidation.
Initial Data
Usually the customer has legacy data from earlier accounting systems when implementing SAP General Ledger. After the implementation team transfers this data to SAP General Ledger, you can start posting entries in the transaction applications for the current fiscal year.
If you start using SAP Consolidation after you are already using SAP General Ledger, and you want to use integrated data collection, you need to transfer the legacy data as well as the FI postings that have already occurred as the initial data for the consolidation ledgers. You will most likely post cumulative (or year-to-date) balances to generate the beginning balances.
Consolidation-related Assignments
When SAP General Ledger is implemented, customers often transfer the legacy data only as cumulative balances. These balances usually do not include the assignments that are specifically needed for consolidation purposes. In particular, this includes partner assignments and consolidation transaction types.
The FI postings of the current fiscal year only include these assignments if the following customizing settings have been made:
You must add any missing assignments in the appropriate consolidation ledger.
Features
Various tools are available for preparing the data.
Subsequent Posting of FI Documents
You can adjust the FI documents if they have not yet been archived.
If consolidation-related assignments are missing in the FI documents to be subsequently posted, you can specify in the subsequent posting program that the following assignments should be reread:

Please note that you cannot simultaneously make subsequent postings in the period in which operational documents are posted. Hence, you should only subsequently post in past periods, which have been closed for operational postings.
Manual Data Entry
If the FI documents are already archived, you must enter the initial balances manually in the consolidation ledger.

When posting manually to the consolidation staging ledger, please note that simultaneous posting is not permitted. Otherwise, update problems can occur. Therefore, you should organize a posting break during the time you post manual entries.
Deleting Transaction Data
If the consolidation ledger contains incomplete data, it usually makes sense to delete this data and repost the FI documents.
Matching the General Ledger with the Consolidation Staging Ledger
You can reconcile these two ledgers to ensure that all G/L data has been posted to the consolidation staging ledger.
