The calculation automatically switches to Default Environmental Data (DED) published by the ministry, with a 30% penalty on indicators. Three options limit the impact: (1) look in INIES for an equivalent product with a valid FDES, (2) ask the supplier whether it plans to publish a declaration on a timetable compatible with construction, (3) redirect the specification at DCE stage towards a product already holding an FDES.
Read the source article: Reading an FDES for RE2020: modules, DED, validity