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Commons Guidance — Purpose-Relative Semantic Preservation v1.0
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Commons Guidance — Purpose-Relative Semantic Preservation v1.0

Record: CC-GUIDE-PRSP-001 v1.0

Date: 27 September 2026

Standing: ADMITTED COMMONS GUIDANCE / INVARIANT — INTERNAL

Evidence: CC-TEP-T01 and CC-TEP-T02.

Kernel impact: NONE. RRAP + QMAP + Assessment Assertion + Non-Promotion remain sufficient.

Governing principle

Purpose-Relative Semantic Preservation: When a mapping participates in a declared downstream reliance, the material semantic distinctions required for that reliance must remain recoverable or be explicitly identified as conditional or lost. Semantic preservation does not transfer standing or authority.

Interpretation

Semantic interoperability is not established merely because a source and target can be mapped.

Adequacy depends on the declared purpose and reliance.

A mapping may therefore be:

  • adequate for descriptive analytics;
  • adequate for architecture analysis;
  • inadequate for consequential reconstruction;

without contradiction.

TEP binding

Transition Evidence Profile (TEP) may be used as an Assessment Assertion basis when the downstream purpose requires reconstruction of consequential transitions.

The assessment asks whether material semantics needed to reconstruct the transition remain recoverable across the mapping.

TEP does not become a Commons profile.

Existing kernel responsibilities

RRAP: role of representation/evidence.

QMAP: explicit source-target relationship, purpose, scope, provenance and lifecycle.

Assessment Assertion: basis-bound assessment of mapping/representation adequacy.

Non-Promotion: prevents semantic relation, role or assessment from automatically becoming stronger standing/authority.

Preservation boundary

For a declared reliance, assess material distinctions such as:

  • identity/version;
  • actor versus authority;
  • authority source/scope;
  • purpose;
  • policy/basis;
  • evidence/provenance;
  • temporal applicability/currentness;
  • conditions/limitations;
  • standing;
  • revision/supersession.

Not every mapping must preserve every source semantic. Materiality is purpose-relative.

Customer sovereignty

Interoperability should preserve the customer's ability to express the same material institutional distinction in its own semantics, not require the customer to adopt Arqua's vocabulary or authority model.

Local semantic authority remains local.

Non-promotion examples

  • mapped ≠ equivalent;
  • equivalent meaning ≠ same standing;
  • preserved for analytics ≠ preserved for execution;
  • source authority ≠ consumer authority;
  • EAA admissibility ≠ customer approval;
  • successful transformation ≠ authoritative result;
  • reconstructable ≠ admissible.

Assessment outcomes

Commons does not yet standardise a new preservation vocabulary.

Domain-defined Assessment Assertion outcomes may express concepts such as:

PRESERVED; PRESERVED_WITH_CONDITIONS; LOSSY_ACCEPTABLE; LOSSY_MATERIAL; UNDETERMINED.

Standardise only if repeated cross-domain use demonstrates need.

Decision

ADMITTED AS GUIDANCE / INVARIANT.

No fourth Commons core profile.

No Transition Semantic Profile.

No universal transition ontology.

No transfer of Arqua or customer authority.

The TEP→Commons test sequence is closed unless a new cross-domain counterexample or implementation need emerges.