Health information must be findable and complete across a mobile workforce. The service chooses and maintains a record system, usually clinical software accessible on mobile devices, with controls over who can create, read and change records, regular backups and a procedure for filing results and correspondence. Where paper and electronic records coexist, for example visit notes written by hand then transcribed, every consultation is noted in both and each record says where the clinical notes live, so no clinician works from a partial picture.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.