Hi Surya.
After some research, i found the following:
Only the following technical fields are made available for use in characteristic derivation:
- The sender cost center (CO-PA SKOST) in cost center assessment and cost center activity allocation.
- The sender process (CO-PA PRZNR) in process assessment and process activity allocation
- Cost element (CO-PA KSTAR) for direct postings from financial accounting, for actual settlement and in assessment and actual activity allocation
Looks like you are correct, i cant use KSTAR for TOP-DOWN, only for assesments.
The source of the info is the HELP online
Source and Target Fields - Profitability Analysis (CO-PA) - SAP Library
thanks man for your time man.
Arturo.