Data integrity, not covered by ISO/IEC 27001: integrity is maintained on input, output, transmission and exchange and in storage. No Level 1 requirement; Level 2 (a and b) requires validation checks on all input and output processes and controls protecting authenticity and message integrity; Level 3 is the same.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.