Article 39U.K.Entry into force and application
This Regulation shall enter into force on the third day following its publication in the Official Journal of the European Union.
It shall apply from 1 January 2004. However, Article 4(2) shall apply as of 1 May 2004 as regards the initial codes CZ, EE, CY, LV, LT, HU, MT, PL, SI and SK subject to the ratification of the Treaty of Accession.
However, the distinguishing numbers of packing centres approved before 31 December 2003 may continue to be used until 31 December 2004.