generated: '2026-07-25'
method: searched
source: https://developer.kpn.com/documentation-response-headers
versioning:
  scheme: header (api-version), version-less by default
  request_header: api-version
  response_header: api-version
  behaviour: If no version is supplied in the header the gateway serves the latest version of the API.
  definition_versions: published per product on SwaggerHub (see changelog/kpn-changelog.yml)
  docs: https://developer.kpn.com/documentation-response-headers
deprecation:
  sunset_header: true
  spec: RFC 8594
  evidence: 'KPN documents a sunset response header: "This field will be populated with the deprecation details".'
  policy_url: https://developer.kpn.com/documentation-response-headers
  deprecated_operations: []
status_page: https://developer.kpn.com/status
status_page_scope: KPN SMS API and KPN API Endpoints, with incident and maintenance history
sla:
  url: https://developer.kpn.com/page/legal
  uptime_target: null
  note: 'The developer terms commit to commercially reasonable efforts only: "the Supplier does not guarantee any
    of these levels, unless such guarantee is explicitly provided in the Agreement." Contractual SLAs are negotiated
    per agreement, not published.'
support:
  url: https://developer.kpn.com/support
  response_target: 1 business day
  email: api_developer@kpn.com
production_promotion:
  sandbox_to_production: Account upgrade with a KPN Registration Number (KRN) or an iDIN bank identity check; billing
    starts at promotion, testing stays free.
  docs: https://developer.kpn.com/page/getting-started
notes:
- No public roadmap and no narrative release-notes page were found on developer.kpn.com as of 2026-07-25.
- The dated record of API change is the SwaggerHub version history captured in changelog/kpn-changelog.yml.