The organisation maintains and retains documented evidence that each item of measuring equipment used to decide product conformity conforms and is traceable, with a unique identification specific to each item (commonly a measuring equipment register). When equipment is found unfit, it retains a record of what was done and of the notification sent to the customer where products or services have already been delivered.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.