If you are looking at using the trade allowance management then it has some additional analysis details that you can use to track the effect of your promotion. One example is an estimation of the costs of the promotion vs how much additional trade you think you will get.
There is a merchandise cost figure that can be calculated when you move the agreement into the internal approved stage. In this example let’s have a look at the effect of the calculation using an off invoice calculation which will take into consideration the ship quantity, item price, discount allowed and item price.
Here is a quick overview.
D365 1611 Update5 (7.0.4475.35138)
AX2012 R3 CU11