Dear Rahul,
You can use the BICA to create both system KPI's and manual entry KPIs also.
For Example all the 3 scenarios are possible with BICA:
1. KPI Actual data comes from BW and Target data comes from BW/BPC
2. KPI Actual data comes from BW and Target data comes from Entry & Approval.
3. KPI Actual data and Target data comes from Entry & Approval
Thanking you,
Regards
Mrudul.