Amount distribution by product definition
Distribution by product definition is similar to the by amount distribution, the only difference being that line weights are used. When the additional amount has Based On Lines = True, the distributional coefficients are multiplied by the lines' weights.
The only difference is in the following calculation formula:
[ki] = ([ki] + [line amount i]) * [line weight i].
In addition to Example 3 from Percent value calculation, there's an additional amount commission with input percent of 5 and three lines (line #10 for 150 EUR, line #20 for 40 EUR and line #30 for 69 EUR) which have the following weights:
line #10: weight = 0.00;
line #20: weight = 1.00;
line #30: weight = 1.00.
The commission amount is 5.45 EUR and its distribution is calculated by the following coefficients:
[k1] = [line amount #10] * [line weight #10] = 150 * 0.00 = 0;
[k2] = [line amount #20] * [line weight #20] = 40 * 1.00 = 40;
[k3] = [line amount #30] * [line weight #30] = 69 * 1.00 = 69.
The amount of 5.45 EUR is distributed in 40:69 ratio as follows:
[line #10 commission] = 5.45 EUR * 0 / 109 = 0 EUR;
[line #20 commission] = 5.45 EUR * 40 / 109 = 2 EUR;
[line #30 commission] = 5.45 EUR * 69 / 109 = 3.45 EUR.