The point of rating an organization's data quality management maturity is to see how far it meets what the ISO 8000-61 process reference model asks for. The part lays out the steps of such an assessment (Figure 1, drawn as an IDEF0 A0 diagram), using a maturity model built to ISO/IEC 33004, the ISO/IEC 33020 measurement framework and the ISO/IEC 33002 assessment requirements.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.