Well first of all i'm a little new to SAP, all the knowledge i have is build from working with SAP and not from training or something similar.
The problem i have is that I want to use a Price from a 'material' in a other line of my calculation.
I have products that i use in a calculation, these products are extracted from the inventory, for us it is free but other people in the organisation need to pay for it.
So I want to make a negative rule so my costs are zero.
I hope i explained it good now, in the image i attached is more information.
Mark de Jonge