1. Create RFC destinations to initiate communication between the J2EE and SAP BW.
See: Creating RFC Destinations
2. Configure the CAF runtime properties for SAP BW integration.
See: Configuring CAF Runtime Properties for BW Integration
3. Set security roles or users to use during the data extraction process.
See: Setting Up Users for Data Extraction
4. Create RFC destinations on SAP BW.
See: Creating RFC Destinations in SAP BW
5. Set up functional modules for locking and unlocking.
See: Setting Up Locking and Unlocking
CAF Core and SAP BW Integration (CAF Core Developer’s Guide)