Agencies must keep personal data accurate and correct or supplement it on their own initiative or on request (the requester must give an appropriate explanation, ER 19); where accuracy is disputed, processing or use must stop unless needed for the agency's duties or business or the person consents in writing, with the dispute noted. Where the agency was at fault for not correcting or supplementing data, it must tell the parties to whom it provided the data once it has done so.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.