Which impact has a material classification as a waste/residue versus a co-product? Why is it important?

The upstream classification of feedstocks as waste/residue or co-product determines the scope of the GHG footprint. For wastes/residues the calculation of GHG emissions starts with the transport from the Point of Origin (PoO) where the waste is generated to the Collecting Point (CP) . For Co-Products calculation of GHG emissions the entire supply chain needs to be included in the GHG calculation, i.e. for a bio-based product emissions from cultivation and potential land use change must be included.