The investigator or institution should confirm agreement with the sponsor by signing the protocol or another contract, and comply with the protocol, GCP and regulation. All protocol deviations should be documented, including those the sponsor points out; the investigator should review them and, for important ones, explain them and take measures to prevent recurrence. Deviations should happen only when needed to eliminate an immediate hazard to participants, in which case the sponsor should be told promptly and the hazard, the change made and any proposed amendment reported to the IRB/IEC and to regulators where relevant.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.