# Commission Decision of 4 March 2008 adopting the SIRENE Manual and other implementing measures for the second generation Schengen Information System (SIS II) (2008/334/JHA), Division 2.12.2: Operational rules

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

Links between alerts do not require special procedures for the exchange of supplementary information. Nevertheless the following principles shall be observed:
In case there is a hit on two or more interlinked alerts, the SIRENE Bureau of the executing Member State shall send a G form for each of them.
No forms shall be sent on alerts which, although linked to an alert on which there was a hit, were not respectively the object of the hit. This rule shall not apply in the case when a linked alert for which there was no hit is an alert for arrest or for a missing person (protection). In this case the communication of the discovery of the linked alert shall be carried out using an M form.

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Source: https://www.legislation.gov.uk/eudn/2008/334/annex/division/2/division/2.12/division/2.12.2 (the official version)
Page: https://openlegislation.uk/eu-decision-2008-334/annex/division-2/division-2.12/division-2.12.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.