Under the 2012 edition the body must have procedures for preventive action that remove the causes of potential nonconformities. The action must be in proportion to the likely harm of the possible problem. The procedure must define how the body identifies potential nonconformities and their causes, evaluates whether action is needed to prevent occurrence, determines and implements the action, records the results and reviews the effectiveness of what was done. The procedure for preventive action does not have to be separate from the corrective action procedure.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.