The system engineering function plans its activities to the project phases management has defined and as ECSS-M-ST-10 lays down, monitors the execution of every system engineering activity including those at lower levels, identifies the critical elements, and, for critical elements that sit below the next level down, makes the technical requirements specification, design definition file and design justification file available early in the project so that the project risk can be controlled.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.