HOW TO FIND PREVIOUS BALANCE OF DOCUMENT NUMBER.

Question

Hello Abapers,
I am doing customer statment report in FI.In this i need to find previous cumulative balance of document number and i need to add present balance.
For eaxmple.
Invoice    payment        Balance    Cumulative balance
8000       4000              600             600
8001       4001              500             (600 + 500 ) = 1100
              4002              800             (600 + 800) = 1400.
8002       4003             900              (1400+900) = 2300.
              4004             1000            (1400+1000) = 2400.
In the above example,I need to find cumulative balnce of 8000(600) and add document(4001,4002) of balance.
This is my case.
How can i achive it.
waiting for u rfavourable replies.
Regards
Maruthi

Answer 1

If I understand you right, the input is restricted to positive integers. (if you allow negative numbers, zero, or fractions, you need to define what results you want).
For positive integers inputs, here's a mathematical solution (but the formatting solutions above are probably simpler).
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