The quality description covers specifying, describing and evaluating the demand for qualification: what is needed, why, and of what kind (formal, informal, prescriptive, taxonomy). Annex B's example turns it into a requirement specification for the project through document analysis, interviews and workshops, evaluated by experts.
This control maps to 1 controls across 1 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.
Every mapping shown was judged rather than inferred from wording similarity, and the ones that failed review are published too. See the coverage reports and what was rejected.
The graph holds this control, the 1 it maps to, and the evidence behind each claim, over MCP and REST.