All three are legally admissible. Technically, an individual FDES reflects a particular manufacturer's actual performance. A trade association's collective FDES includes a conservative margin (+10 to +20%) penalising manufacturers better than average. A configurable FDES is a parameterised declaration adapting to the order (thickness, finish) - useful for extensive catalogues, with a score between individual and collective.
Read the source article: Reading an FDES for RE2020: modules, DED, validity