Structured, template-conformant knowledge captured as a byproduct of resolving an Incident — symptom, diagnosis, fix, verification — distinct from a general Knowledge Item because its structure is fixed by CAP-166's templating.
Moderate; grows with confirmed byproduct captures
Indefinite while active, retired like any other Knowledge Item once superseded
Only the control-bearing entities were modelled for lifecycle. Defensible as a starting point, but it does leave the entity model uneven, and this is incompleteness rather than a finding.