PSDA.2:4.3 - Keep material exclusions and unknowns alive

For every omitted item that could change a downstream result, record the item, exclusion reason, current evidence or uncertainty, consequence of being wrong, and reopen observation. Distinguish:

• outside for this receiving use from irrelevant in general;
• deferred from rejected;
• unknown membership from supported non-membership;
• absent evidence from evidence of absence; and
• a practical stopping decision from a claim that no relation or consequence exists.

Items with no plausible consequence for the current use need not receive a full record. Items that can reverse a high-consequence result require proportionate direct assurance or an explicit stop.