Transitional provisions
Article 4
When complying with their obligation set out in Article 3(1) of this Directive, Member States shall ensure that their national legislation transposing Article 3, point (u), Article 10a(3) and (4), Article 10c(7) and Annex I, points 1 and 3, of Directive 2003/87/EC, in its version applicable on 4 June 2023, continue to apply until 31 December 2025. By way of derogation from Article 3(1), first subparagraph, last sentence, they shall apply their national measures transposing amendments to those provisions from 1 January 2026.