Data Input from Other SAP Systems 
Use
You can use data from other SAP Systems in the FI-SL System by:
Features
When a business transaction for the local company code is entered, the business transaction is sent real-time to the Integration Manager.
The Integration Manager analyzes the data and then determines to which ledger(s) the data should be posted.
The document number of the original document is always taken over into the FI-SL System.