# Commission Implementing Decision of 1 July 2011 amending the SIRENE Manual (notified under document C(2011) 4574) (Only the Bulgarian, Czech, Dutch, English, Estonian, Finnish, French, German, Greek, Hungarian, Italian, Latvian, Lithuanian, Maltese, Polish, Portuguese, Romanian, Slovak, Slovenian, Spanish and Swedish texts are authentic) (2011/406/EU), Division 2.1: Multiple alerts (Article 107)

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

Several alerts may be issued by different Member States for the same subjects. It is essential that this does not cause confusion to end-users, and that they are clear as to the measures to be taken when seeking to enter an alert. Various procedures shall therefore be established for detecting multiple alerts and a priority mechanism shall also be established for entering them into the SIS.
This calls for:
checks before entering an alert in order to determine whether the subject is already in the SIS,
consultation with the other Member States when the entry of an alert will cause multiple alerts that are incompatible.

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Source: https://www.legislation.gov.uk/eudn/2011/406/annex/division/2/division/2.1 (the official version)
Page: https://openlegislation.uk/eu-decision-2011-406/annex/division-2/division-2.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.