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Release: CX-Neptune (Preview)

Changelog

All notable changes to CX-0152 will be documented in this file.

[1.2.0] - CX-Neptune (26.09)​

Added​

  • Added schema based validation for usage permission XOR constraint groups in assets/policy-schema.json (warranty-* and data-usage-end-* families) using contains with maxContains.
  • Added implementation of one new right operand for the Constraint "UsagePurpose": ECU (cx.ecu.base:1)

Changed​

  • Updated AccessPolicy and UsagePolicy definitions in assets/policy-schema.json to explicit object schemas with typed properties.
  • Tightened policy rule cardinality in assets/policy-schema.json: All rules and constraints enforce exactly one rule and constraint now (minItems: 1, maxItems: 1) to ensure schema validation.
  • Corrected invalid JSON Schema keyword casing in usage obligations from minitems/maxitems to minItems/maxItems.
  • Refactored usage obligation constraint item definition in assets/policy-schema.json to reference the atomic constraint schema (atomic-constraint-schemas.json#/definitions/AtomicProhibitionConstraint).
  • Changed duration constraint rightOperand type from integer to string with regex pattern to align with DSP operand shape and avoid validation mismatches.

Removed​

  • N/A

[1.1.0] - CX-Neptune Preview (26.06)​

Added​

  • Implementation of three new Rightoperands for the Constraint "UsagePurpose"
    • Engineering
    • MaterialAccounting
    • eSDSCom
  • Adding of Conformity Assessment Criteria

Changed​

  • Updated ODRL JSON-LD context URL from Catena-X namespace to standard Dataspace profile
  • Migrated all references from https://w3id.org/catenax/2025/9/policy/odrl.jsonld to https://w3id.org/dspace/2025/1/odrl-profile.jsonld
  • Adapted $comment text in usage-purpose-constraint-schema.json to clarify that when multiple purposes are listed, data can be used for any of them
  • Fixed typo: corrected pfc to pcf in internal $ref of rightOperand in usage-purpose-constraint-schema.json
  • Fixed spelling: corrected automisable to automatable in CX-0152-CAC.md
  • Fixed typo: removed duplicate word "this this" in CX-0152-CAC.md

Removed​

  • Check of MembershipCredential as general obligation

[1.0.0] - CX-Saturn (25.09)​

Added​

  • Initial version of CX-0152
  • Description of conventions for constraints, access policy and usage policy

Changed​

  • N/A

Removed​

  • relevant parts in CX-0018 conventions for constraints were removed
  • relevant parts in all use case standards conventions for access policy, usage policy and constraints were removed (as patch during the opt out phase)

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