# Commission Implementing Regulation (EU) 2016/799 of 18 March 2016 implementing Regulation (EU) No 165/2014 of the European Parliament and of the Council laying down the requirements for the construction, testing, installation, operation and repair of tachographs and their components (Text with EEA relevance), Appendix ANNEX 2

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

SEQUENCE DIAGRAMS OF MESSAGES EXCHANGES WITH THE ITS UNIT.
Figure 1
Sequence Diagram for PIN validation attempt
Figure 2
Sequence Diagram for ITS Unit's authorization verification
Figure 3
Sequence Diagram to process a request for data classified as non-personal (after correct PIN access)
Figure 4
Sequence Diagram to process a request for data classified as personal (after correct PIN access)
Figure 5
Sequence Diagram for PUC validation attempt

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Source: https://www.legislation.gov.uk/eur/2016/799/annex/1/annex/2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2016-799/annex-1/annex-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.