# Council Regulation (EU) No 1272/2012 of 20 December 2012 on migration from the Schengen Information System (SIS 1+) to the second generation Schengen Information System (SIS II) (recast), Article 4: Technical components of the interim migration architecture

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

In order to ensure the migration from SIS 1+ to SIS II, the following components shall be made available to the extent necessary:
(a) the C.SIS and the connection to the converter;
(b) the communication infrastructure for SIS 1+ allowing the C.SIS to communicate with the N.SIS;
(c) the N.SIS;
(d) Central SIS II, NI-SIS and the communication infrastructure for SIS II allowing the Central SIS II to communicate with N.SIS II and the converter;
(e) the N.SIS II;
(f) the converter.

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Source: https://www.legislation.gov.uk/eur/2012/1272/article/4 (the official version)
Page: https://openlegislation.uk/eu-regulation-2012-1272/article-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.