Estimating Type

Calculating the cost or sales amount in a top down structure means you distribute a top amount to the lower level elements. There is no aggregation of the costs. The structural element you work from determines the amount. The rule is that LN looks for amounts on estimate lines on level Total/Cost Type/Other Structure/Detail and in that order.

Calculating the cost or sales amount in a bottom up structure means you give exact amounts for lowest level elements and aggregate them to make the top amount.