A requestor may ask in writing for correction of inaccurate, incomplete, misleading or out-of-date data. The data controller must acknowledge receipt (reg. 11) and, if satisfied, within 21 days correct the data, supply the requestor a corrected copy, and take practicable steps to send the correction with written reasons to third parties it disclosed the data to in the previous 12 months that it believes still use it (not for public register inspections); if unable, it gives written reasons within 21 days and completes within a further 14 days. Where another controller processing the data is better placed, the request is transferred immediately and the requestor told.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.