A.2.8:4.3 - Occurrence Identity and Continuity

One occurrence is identified by:

• the actual duty bearer;
• exact duty referents and counterparties;
• normalized modality and scope;
• constitutive policy and rule;
• the actual instituting basis, only when that rule makes the basis identity-bearing; and
• one maximal continuous validity interval.

The actual instituting basis is always required for obtaining. It is part of occurrence identity only when the exact constitutive rule says that reinstitution identifies another duty. A compatible policy edition, new record, or later instituting act preserves the occurrence only through an explicit continuity decision showing that every identity-bearing fact and the rule’s deontic effect continue. A changed bearer, modality, referent set, constitutive rule, identity-bearing basis, or interrupted validity prevents reuse of the same occurrence identity. Establish the new commitment under §4.2 before asserting another occurrence. The commitment ID and its describing claim do not decide sameness.

When a rule makes a duty end with a system-role assignment, an assignment boundary ends that commitment. When the rule makes the duty persist for the same actual system across a replacement assignment, state that continuity explicitly. A duty for a different actual bearer, if it obtains under §4.2, has another occurrence identity.