generated: '2026-07-27'
method: searched
source: https://github.com/SmartDCCInnovation/dccboxed-signing-tool/releases
summary: >-
  Smart DCC runs two very different lifecycles. The open-source DCC Boxed tooling is
  versioned with semantic-version git tags and dated GitHub releases. The production DUIS
  interface is versioned by the Smart Energy Code modification process: a numbered DUIS
  version (v5.3 at the time of review) designated through consultation and delivered in
  scheduled June and November SEC releases, each with a published Testing Approach
  Document consulted on in advance.
versioning:
- surface: DCC Boxed DUIS signing tool
  scheme: semver
  current: 2.1.2
  released: '2026-02-09'
  tags: https://github.com/SmartDCCInnovation/dccboxed-signing-tool/releases
  in_spec: 1.0.0 (info.version in the published openapi.yaml, not kept in step with the
    release tag)
- surface: DUIS (DCC User Interface Specification)
  scheme: numbered specification version designated under the Smart Energy Code
  current: V5.3
  released: '2025-03-18'
  docs: https://www.smartdcc.co.uk/media/d5kh4khf/dcc-user-interface-specification-v53-18-mar-2025.pdf
  registry: https://smartenergycodecompany.co.uk/documents/sec-subsidiary-documents/sec-appendix-ad-dcc-user-interface-specification-duis/
release_process:
  cadence: two scheduled SEC releases per year, in June and November
  consultation: >-
    Each SEC release is preceded by a public consultation on a Testing Approach Document,
    with the DCC's conclusions published afterwards. Interface changes (DUIS, GBCS, SMETS1
    Supporting Requirements) are consulted on individually before designation.
  url: https://www.smartdcc.co.uk/consultations/
deprecation:
  policy_url: https://smartenergycodecompany.co.uk/the-smart-energy-code/
  sunset_header: false
  note: >-
    There is no HTTP Deprecation/Sunset (RFC 8594) header contract — DUIS is an XML web
    service on a private gateway and the signing tool is a two-operation local utility.
    Withdrawal of an interface version is a Smart Energy Code modification: changes are
    consulted on, designated with an effective date, and legacy behaviour is retired via
    the code, not via response headers. Example in the public consultation record: the
    proposal to remove the 0x8F75 alert from the Traffic Management Mechanism Document.
  evidence:
  - https://www.smartdcc.co.uk/consultations/consultation-on-a-proposal-to-remove-the-0x8f75-alert-from-the-traffic-management-mechanism-document/
  - https://www.smartdcc.co.uk/consultations/smets1-conclusion-clause-retention-beyond-smets1-tmad-expiry-and-proposed-amendments-to-the-smets1-supporting-requirements/
status_page: https://www.smartdcc.co.uk/our-smart-network/network-data-dashboard/performance/
status_page_detail:
  published_metrics:
  - Percentage of service requests successfully carried on the network, with volume trend
  - Percentage of successful pre-pay top-up requests over the last year
  - Network availability — proportion of time the network operated as normal
  - Network availability during planned changes
  incident_reporting: https://www.smartdcc.co.uk/major-incident-management/
  incident_detail: >-
    Smart DCC publishes every Category 1 incident at the end of each month as a downloadable
    PDF, with a public definition of what qualifies as Category 1, and states 24/7
    monitoring. More detailed major incident reports are available to SEC Parties via the
    SEC website. As of the June 2026 report there were no Category 1 incidents in the month.
sla:
  url: null
  uptime_target: null
  note: >-
    No public uptime SLA. Service levels are set by the Smart Meter Communication Licence
    and the Smart Energy Code and reported through the Annual Compliance Report and the
    performance dashboard rather than as a published API SLA.
  reporting: https://www.smartdcc.co.uk/about-dcc/governance-regulations/governance-reports-policies/
roadmap: https://www.smartdcc.co.uk/our-smart-network/network-updates/
roadmap_detail: >-
  The Network Updates page lists in-flight programmes and key initiatives with estimated
  delivery dates, including the Data Service Provider (DSP) programme, Enduring Change of
  Supplier (ECoS), Market-wide Half-Hourly Settlement, dual-band communications hubs,
  4G network evolution and SMETS1 enrolment and adoption.
deprecated_operations: []