Hi Fei,
Do you have advice on how to do it with EPDs? There are a couple templates in one of my projects that have an EPD but are also carbon neutral. I have created scenarios capturing the numbers from the EPDs but when I try to capture separate scenarios to capture the carbon neutrality of the material, the above methodology does not work as I can’t put negative quantities for the EPD. What would be the best way forward? If the EPD only captures A1 to A3, does removing it from the model/template suffice?