One activity is linked to every record it concerns

Context

An interaction can involve several people and organizations. Staff need a consistent record of that shared event in each relationship context.

Decision

The observed design gives Activity ownership of typed links and their indexed copies. Ordinary save requirements differ from post-deletion retention; the object invariants record that distinction. This record does not extend the cited planning approval.

Alternatives Considered

The structured alternatives describe concrete competing designs and their tradeoffs. Where the origin records an existing ruling, it remains the authority; an observed implementation does not establish Product’s rejection of every alternative.

Consequences

Shared context remains one interaction across timelines. Retained unlinked interactions need the already-recorded management behavior, and computed summaries avoid another persisted fact home.