EN 50126-2:2017 5.1 covers the overall safety process of part 2: risk assessment (A), its outcome (B), hazard control (C) and revision of the risk assessment (D), with responsibilities; the system under consideration applies the method or requirement of this sub-clause where its safety process relies on it.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.