When dealing with multiple batches of the same material with different sustainability characteristics, how should these batches be accounted for in GHG calculations?

If an ISCC System User receives multiple batches of the same material, aggregation of GHG values is only possible if the sustainability characteristics, including the GHG value, country of origin etc. are the same. As a derogation of this rule, if multiple batches differ in the GHG value only, it is possible to aggregate using the GHG values of the worst-performing batch. Averaging of GHG values is not allowed.