http://www.legislation.gov.uk/eur/2017/2226/article/40Regulation (EU) 2017/2226 of the European Parliament and of the Council of 30 November 2017 establishing an Entry/Exit System (EES) to register entry and exit data and refusal of entry data of third-country nationals crossing the external borders of the Member States and determining the conditions for access to the EES for law enforcement purposes, and amending the Convention implementing the Schengen Agreement and Regulations (EC) No 767/2008 and (EU) No 1077/2011Regulation (EU) 2017/2226 of the European Parliament and of the CouncilRegulation (EU) 2017/2226 of the European Parliament and of the Council of 30 November 2017 establishing an Entry/Exit System (EES) to register entry and exit data and refusal of entry data of third-country nationals crossing the external borders of the Member States and determining the conditions for access to the EES for law enforcement purposes, and amending the Convention implementing the Schengen Agreement and Regulations (EC) No 767/2008 and (EU) No 1077/20112024-06-20King's Printer of Acts of Parliamenthttps://webarchive.nationalarchives.gov.uk/eu-exit/https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02017R2226-20190611texttext/xmlen2019-06-11 CHAPTER VI <Strong>DEVELOPMENT, OPERATION AND RESPONSIBILITIES</Strong> Keeping of data in national files and national entry/exit systems Article 40 1 A Member State may keep the alphanumeric data which that Member State entered in the EES, in accordance with the purposes of the EES, in its national entry/exit system or equivalent national files, in full respect of Union law. 2 The data shall not be kept in the national entry/exit systems or equivalent national files for longer than they are kept in the EES. 3 Any use of data which does not comply with paragraph 1 shall be considered a misuse under the national law of each Member State as well as under Union law. 4 This Article shall not be construed as requiring any technical adaptation of the EES. Member States may keep data in accordance with this Article at their own cost and risk and using their own technical means.