Before process validation, critical equipment and its supporting systems should be qualified, usually through design qualification (the design suits the purpose), installation qualification (installed or modified equipment matches the approved design, manufacturer recommendations or user requirements), operational qualification (it performs as intended across the expected operating ranges) and performance qualification (connected equipment and systems perform effectively and reproducibly on the approved process and specifications), done individually or combined.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.