Secures all kinds of ICS components, regardless of manufacturer, type, purpose and location, for a single device or a modular device built from several components. In Edition 2023 the Baustein carries 20 requirement numbers, 13 of them live: 4 Basis requirements (B, MUSS, to be fulfilled first and without exception), 6 Standard requirements (S, SOLLTE) and 3 requirements for elevated protection needs (H), with 7 numbers withdrawn (ENTFALLEN) and kept for stable numbering. It is applied to an IT system in modelling order R2. The requirements property on this node lists every requirement by number, title, level and responsible role, so a requirement is cited as IND.2.1.A<n>.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.