Pursuant to Article 56 of the Act of Accession, where acts of the institutions remain valid beyond 1 January 2007, and require adaptation by reason of accession, and the necessary adaptations have not been provided for in the Act of Accession or its Annexes, the necessary acts are to be adopted by the Council, unless the original act was adopted by the Commission.

The Final Act of the Conference which drew up the Treaty of Accession indicated that the High Contracting Parties had reached political agreement on a set of adaptations to acts adopted by the institutions required by reason of accession and invited the Council and the Commission to adopt these adaptations before accession, completed and updated where necessary to take account of the evolution of the law of the Union.

• in the field of the free movement of goods: Regulations (EC) No 2003/20032 and (EC) No 339/933,
• in the field of the freedom of movement of persons: Regulations (EEC) No 1408/714 and (EEC) No 574/725,
• in the field of company law: Regulation (EC) No 2157/20016,
• in the field of competition policy: Regulation (EC) No 659/19997,
• in the field of agriculture (including veterinary legislation): Regulations: No 79/658, (EEC) No 1784/779, (EEC) No 2092/9110, (EEC) No 2137/9211, (EC) No 1493/199912, (EC) No 1760/200013, (EC) No 999/200114, (EC) No 2160/200315, (EC) No 21/200416, (EC) No 853/200417, (EC) No 854/200418, (EC) No 882/200419 and (EC) No 510/0620,
• in the field of transport policy: Regulations (EEC) No 1108/7021, (EEC) No 3821/8522, (EEC) No 881/9223, (EEC) No 684/9224, (EEC) No 1192/6925 and (EEC) No 2408/9226,
• in the field of taxation: Regulation (EC) No 1798/200327,
• in the field of statistics: Regulations (EEC) No 2782/7528, (EEC) No 357/7929, (EEC) No 837/9030, (EEC) No 959/9331, (EC) No 1172/9832, (EC) No 437/200333 and (EC) No 1177/200334,
• in the field of energy: Regulation (EC) No 1407/200235,
• in the field of environment: Regulations (EC) No 761/200136 and (EC) No 2037/200037,
• in the field of cooperation in the fields of justice and home affairs: Regulations (EC) No 1346/200038, (EC) No 44/200139, (EC) No 1683/9540 and (EC) No 539/200141,
• in the field of customs union: Regulation (EEC) No 2913/9242,
• in the field of external relations: Regulations (EEC) No 3030/9343, (EC) No 517/9444, (EC) No 152/200245, (EC) No 2368/200246 and (EC) No 1236/200547,
• in the field of common foreign and security policy: Regulations (EC) No 2488/200048, (EC) No 2580/200149, (EC) No 881/200250, (EC) No 1210/200351, (EC) No 131/200452, (EC) No 234/200453, (EC) No 314/200454, (EC) No 872/200455, (EC) No 1763/200456, (EC) No 174/200557, (EC) No 560/200558, (EC) No 889/200559, (EC) No 1183/200560, (EC) No 1184/200561, (EC) No 1859/200562, (EC) No 305/200663, (EC) No 765/200664 and(EC) No 817/200665,
• in the field of institutions: Regulation (EEC) 1/5866.

• in the field of the freedom of movement of persons: Decisions of the Administrative Commission of the European Communities on Social Security for Migrant Workers No 117 of 7 July 198267, No 136 of 1 July 198768, No 150 of 26 June 199269 and No 192 of 29 October 200370,
• in the field of agriculture (veterinary and phytosanitary legislation): Decisions 79/542/EEC71, 82/735/EEC72, 90/424/EEC73, 2003/17/EC74 and 2005/834/EC75,
• in the field of transport policy: Decision No 1692/96/EC76,
• in the field of energy: Decision 77/270/Euratom77 and the Statutes of the Euratom Supply Agency78,
• in the field of environment: Decisions 97/602/EC79 and 2002/813/EC80,
• in the field of cooperation in the fields of justice and home affairs: Decision of the Executive Committee of 28 April 1999 on the definitive version of the Common Consular Instructions81 and Decision of the Executive Committee of 22 December 1994 on the certificate provided for in Article 75 to carry narcotic drugs and psychotropic substances82.