When collecting data in writing, the controller must ask on the collection document whether the person wishes to exercise the right to object, with the choice possible before final validation; when collecting otherwise than in writing it must ask before the end of collection and keep proof that the person had the opportunity to object. A controller receiving an objection must inform without delay every other controller to whom it communicated the data concerned.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.