any inputs

Below is the solution for my requirement...but what to do ,i didnt understand .

Enhancement will be developed:

Standard functionality of pricing worklist only applicable for relating purchasing info record with Mark up value (this functionality is suitable for case price building of vendor waranty). But for normal scenario which is we need to calculate all of possible cost incured such as actual handling cost, insurance cost etc, the system cant automatic retrieve it. The ALV report will be provide it to retrieve all of possible cost for it. Download process will be provided and upload process will be provided. The logic program for updating the supersession price can be provided inside of uploading program

Please please suggest me.

do i need to do user-exit or ALV report?

please

Thanks in advance