L 381/4 Official Journal of the European Union 28.12.2006 REGULATION (EC) No 1987/2006 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 20 December 2006 on the establishment, operation and use of the second generation Schengen Information System (SIS 1) THE EUROPEAN PARLIAMENT AND THE COUNCIL OF THE EURO- PEAN UNION, Having regard to the Treaty establishing the European Commu- nity, and in particular Articles 62(2)(a), 63(3)(b) and 66 thereof, Having regard to the proposal from the Commission, Acting in accordance with the procedure laid down in Article 251 of the Treaty (1), Whereas: (1) The Schengen Information System (‘SIS) set up pursuant to the provisions of Title IV of the Convention of 19 June 1990 implementing the Schengen Agreement of 14 June 1985 between the governments of the States of the Benelux Economic Union, the Federal Republic of Ger- many and the French Republic on the gradual abolition of checks at their common borders (2 (the ‘Schengen Con- vention’), and its development, SIS 1+, constitute an essen- tial tool for the application of the provisions of the Schengen acquis as integrated into the framework of the European Union. (2)  The development of the second generation of SIS (‘SIS ') has been entrusted to the Commission pursuant to Council Regulation (EC) No 2424/2001 (*) and Council Decision 2001/886/JHA (#) of 6 December 2001 on the development of the second generation Schengen Information System (SIS II). SIS II will replace SIS as cre- ated pursuant to the Schengen Convention. (3)  This Regulation constitutes the necessary legislative basis for governing SIS II in respect of matters falling within the scope of the Treaty establishing the European Commu- nity (the ‘Treaty’). Council Decision 2006/000/JHA of ... on the establishment, operation and use of the second gen- eration Schengen Information System (SIS II) (°) consti- tutes the necessary legislative basis for governing SIS II in respect of matters falling within the scope of the Treaty on European Union. (1) Opinion of the European Parliament of 25 October 2006 (not yet published in the Official Journal) and Council Decision of 19 Decem- ber 2006 (not yet published in the Official Journal). (3 OJ L 239, 22.9.2000, p. 19. Convention as last amended by Regula- tion (EC) No 1160/2005 (OJ L 191, 22.7.2005, p. 18). () OJ L 328, 13.12.2001, p. 4. (4 OJ L 328, 13.12.2001, p. 1. () OJL ... ) The fact that the legislative basis necessary for governing SIS I consists of separate instruments does not affect the principle that SIS II constitutes one single information sys- tem that should operate as such. Certain provisions of these instruments should therefore be identical. SIS 1I should constitute a compensatory measure contrib- uting to maintaining a high level of security within the area of freedom, security and justice of the European Union by supporting the implementation of policies linked to the movement of persons that are part of the Schengen acquis, as integrated into Title IV of Part Three of the Treaty. It is necessary to specify the objectives of SIS I, its tech- nical architecture and financing, to lay down rules con- cerning its operation and use and to define responsibilities, the categories of data to be entered into the system, the purposes for which the data are to be entered, the criteria for their entry, the authorities authorised to access the data, the interlinking of alerts and further rules on data processing and the protection of personal data. SIS 1 is to include a central system (Central SIS II) and national applications. The expenditure involved in the operation of Central SIS II and related communication infrastructure should be charged to the general budget of the European Union. It is necessary to establish a manual setting out the detailed rules for the exchange of certain supplementary informa- tion concerning the action called for by alerts. National authorities in each Member State should ensure the exchange of this information. For a transitional period, the Commission should be responsible for the operational management of Central SIS 1I and of parts of the communication infrastructure. However, in order to ensure a smooth transition to SIS II, it may delegate some or all of these responsibilities to two national public sector bodies. In the long term, and fol- lowing an impact assessment containing a substantive analysis of alternatives from a financial, operational and organisational perspective, and legislative proposals from the Commission, a management authority with responsi- bility for these tasks should be established. The transi- tional period should last for no more than five years from the date from which this Regulation applies.