Scenario when Using Step Consolidation 
Implementation Considerations
This scenario applies if you use step consolidation with rollup companies.
Process Flow
The subgroup currency and local currency of rollup companies used in step consolidation should be identical. To ensure that these currencies are identical after the changeover to the euro, you need to assign the ledger and rollup company to the same package.
Reconciliation for step consolidation in a single R/3 System
The following values are reconciled in the balance carryforward:
Reconciliation does not ensure that ledger currency values and local currency values are consistent, because the values have different levels of detail:
After the changeover to the euro, you can check for any differences between ledger currency values and local currency values for the rollup company. You do this by generating a report to compare subgroup values and rollup company values.
You correct any differences by generating a new extract from step consolidation for the next closing.
Reconciliation for step consolidation between two different R/3 Systems
As with step consolidation in a single system, ledger currency amounts in the system supplying data to Consolidation only match local currency amounts of the rollup company in the system receiving data from Consolidation, when a new extract is generated in step consolidation and imported into the receiving system. This happens during the next closing.