I want to monitor various costs derived from postings of transactions (purchase order, shop order etc.) for a specific material in a specific project. This material is defined in project product items as well.

I considered creating a specific activity in WBS for this purpose, and I suppose I need to use code part values and cost elements in this process, so tried to match a cost element (materials in this case) with a relevant code part (MaterialG) using PCE Code Part tab, but I cannot figure out how to assign the code part value to material so that it can derive the cost.

I maybe going in a very wrong way, and appreciate any ideas.