Rounding off while TAX calculation in FB01.

Hi,

I am facing a problem while posting 2 documents in FB01 manually with checking calculate tax. VAT code used is A1(17.5%).

here is the data I entered:

1) posting key amount

Line Item 1: 40 --- 5403.24

2: 50 --- 1394.49

3: 50 --- 59435.61

total Line Item 4: 40 --- 55426.86

Document values: Item 1) 4,598.50

2) 1,186.80-

3) <b> 50,583.49-</b>

4) 55,426.86

5)VAT - Output Tax: 8,255.07-

-

2) posting key amount

Line Item 1: 40 --- 346.33

2: 40 --- 158.33

3: 50 --- 59435.61

total Line Item 4: 40 --- 59940.27

Document values: Item 1) 294.75

2) 134.75

3) <b> 50,583.50-</b>

4) 58,930.95

5) VAT - Output Tax: 8,776.95-

But in both the cases my input entry for 3rd line item is the same, but document is reflecting different values on 3rd line item.

I guess SAP is adding up the amount I entered and calculating TAX, then it is dividing in to line items.

Is there any way I can get same values on line item 3?

Is there any method to force SAP to calculate TAX on line items rather than calculating on total amount i entered, if I am right above?