# 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 II), Article 24: Conditions for issuing alerts on refusal of entry or stay

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

1. Data on third-country nationals in respect of whom an alert has been issued for the purposes of refusing entry or stay shall be entered on the basis of a national alert resulting from a decision taken by the competent administrative authorities or courts in accordance with the rules of procedure laid down by national law taken on the basis of an individual assessment. Appeals against these decisions shall lie in accordance with national legislation.
2. An alert shall be entered where the decision referred to in paragraph 1 is based on a threat to public policy or public security or to national security which the presence of the third-country national in question in the territory of a Member State may pose. This situation shall arise in particular in the case of:
(a) a third-country national who has been convicted in a Member State of an offence carrying a penalty involving deprivation of liberty of at least one year;
(b) a third-country national in respect of whom there are serious grounds for believing that he has committed a serious criminal offence or in respect of whom there are clear indications of an intention to commit such an offence in the territory of a Member State.
3. An alert may also be entered when the decision referred to in paragraph 1 is based on the fact that the third-country national has been subject to a measure involving expulsion, refusal of entry or removal which has not been rescinded or suspended, that includes or is accompanied by a prohibition on entry or, where applicable, a prohibition on residence, based on a failure to comply with national regulations on the entry or residence of third-country nationals.
4. This Article shall not apply in respect of the persons referred to in Article 26.
5. The Commission shall review the application of this Article three years after the date referred to in Article 55(2). On the basis of that review, the Commission shall, using its right of initiative in accordance with the Treaty, make the necessary proposals to modify the provisions of this Article to achieve a greater level of harmonisation of the criteria for entering alerts.

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Source: https://www.legislation.gov.uk/eur/2006/1987/article/24 (the official version)
Page: https://openlegislation.uk/eu-regulation-2006-1987/article-24
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.