Article 1 
1. Subject to the conditions specified in this Article, from 27 June 2017, the provisions of the Schengen acquis relating to the Schengen Information System (‘SIS’), set out in the Annex to this Decision, shall apply in the Republic of Croatia in its relations with: (a) the Kingdom of Belgium, the Republic of Bulgaria, the Czech Republic, the Kingdom of Denmark, the Federal Republic of Germany, the Republic of Estonia, the Hellenic Republic, the Kingdom of Spain, the French Republic, the Italian Republic, the Republic of Latvia, the Republic of Lithuania, the Grand Duchy of Luxembourg, Hungary, the Republic of Malta, the Kingdom of the Netherlands, the Republic of Austria, the Republic of Poland, the Portuguese Republic, Romania, the Republic of Slovenia, the Slovak Republic, the Republic of Finland and the Kingdom of Sweden; (b) the United Kingdom of Great Britain and Northern Ireland with regard to the provisions referred to in Council Decision 2007/533/JHA ( 12 ) ; and (c) the Republic of Iceland, the Principality of Liechtenstein, the Kingdom of Norway and the Swiss Confederation. 2. From 2 May 2017, alerts covered by Decision 2007/533/JHA and Regulation (EC) No 1987/2006 of the European Parliament and of the Council ( 13 ) , as defined in point (a) of Article 3(1) of that Decision and in point (a) of Article 3 of that Regulation, as well as supplementary information and additional data, as defined in points (b) and (c) of Article 3(1) of that Decision and points (b) and (c) of Article 3 of that Regulation, that are connected with those alerts, may be made available to Croatia in accordance with the provisions of that Decision and that Regulation. 3. From 27 June 2017 Croatia shall be able to enter alerts and additional data into the SIS, to use SIS data and to exchange supplementary information, subject to the provisions of paragraph 4. 4. Until checks at internal borders with Croatia are lifted, Croatia: (a) shall not be obliged to refuse entry into or stay on its territory to third-country nationals for whom an alert has been issued by another Member State for the purposes of refusing entry or stay in accordance with Regulation (EC) No 1987/2006; (b) shall refrain from entering into the SIS alerts and additional data, as well as from exchanging supplementary information on third-country nationals, for the purposes of refusing entry or stay in accordance with Regulation (EC) No 1987/2006.
Article 2 
This Decision shall enter into force on the day following that of its publication in the Official Journal of the European Union .