# Regulation (EU) 2018/1861 of the European Parliament and of the Council of 28 November 2018 on the establishment, operation and use of the Schengen Information System (SIS) in the field of border checks, and amending the Convention implementing the Schengen Agreement, and amending and repealing Regulation (EC) No 1987/2006, Article 49: Purpose and retention period of supplementary information

Extent: E+W+S+N.I.

1. Member States shall keep a reference to the decisions giving rise to an alert at the SIRENE Bureau in order to support the exchange of supplementary information.
2. Personal data held in files by the SIRENE Bureau as a result of information exchanged shall be kept only for such time as may be required to achieve the purposes for which they were supplied. They shall in any event be deleted at the latest one year after the related alert has been deleted from SIS.
3. Paragraph 2 shall be without prejudice to the right of a Member State to keep in national files data relating to a particular alert which that Member State has entered or to an alert in connection with which action has been taken on its territory. The period for which such data may be kept in those files shall be governed by national law.

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Source: https://www.legislation.gov.uk/eur/2018/1861/article/49 (the official version)
Page: https://openlegislation.uk/eu-regulation-2018-1861/article-49
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.