Procedures for results that are amended or revised shall make sure that: why the result changed is recorded and, where relevant, stated on the revised report; a revised result is issued only as a separate document or data transfer plainly marked as revised, showing the original date and the patient's identity; the user is told; a wholly new report carries its own identity and can be traced to the one it supersedes; and, if the reporting system cannot hold revisions, a separate record is kept.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.