Until 30 September 2023, the Official Journal of the European Union (OJ) was published daily and contained several documents that were published together on the respective day. On 1 October 2023, the OJ switched to a new act-by-act publication mode: each act is now published individually as an authentic Official Journal in PDF format. Hence, each issue of the OJ now contains only one document. This aims to make the publication process quicker and more flexible with all documents published individually, making the use of additional series for urgent publications unnecessary. As a result, the L … I and C … I series were discontinued as of 1 October 2023, and only the main L and C series remain. The C … A series has also been discontinued.

In the future, referencing of the OJ is based on its series, the document number (except for international agreements and corrigenda), the date of publication, and the European Legislation Identifier (ELI). The page reference has become obsolete.

Example: Regulation (EU) 2023/2131 of the European Parliament and of the Council of 4 October 2023 amending Regulation (EU) 2018/1727 of the European Parliament and of the Council and Council Decision 2005/671/JHA, as regards digital information exchange in terrorism cases, OJ L, 2023/2131, 11.10.2023, ELI: http://data.europa.eu/eli/reg/2023/2131/oj

To further explain the new developments, the Publication Office of the EU has prepared an explanatory video that can be found on YouTube.