Results concerning enterprises in structural business statistics are based on the common EU enterprise definition - as specified by the EU Regulation on statistical units - for the first time for reference year 2018. In addition, results are still published for the unit of presentation that was used until reference year 2017. In the past, it was referred to as the enterprise though, in the sense of the EU Regulation on statistical units, it was a legal unit. The wording of publications has been adjusted accordingly: data on enterprises (until reference year 2017) will now be referred to as data on legal units.