PSD.2:4.2 - Discover affected Systems before equating them with participants
Use the smallest A.1.CSD pass that can challenge the current boundary. Name the focus, configuration, scope, horizon, receiver, examined possibilities, actual direct relations, modal paths, bearers, possible changed characteristics, evidence, uncertainty, and reopen trigger at the grain the inquiry needs.
An affected System may be a participant, be represented by a participant, or have no feasible participation channel. Participation can reveal a bearer or path, but it does not prove System construction, a relation occurrence, a consequence, or authority. Use the direct relation pattern for an obtaining claim. Open A.6.REL only when later work must distinguish this occurrence from another occurrence of the same relation kind, including another episode with the same participants; a readable current relation assertion is otherwise enough.