generated: '2026-07-24'
method: searched
source: https://guides.gitbook.io/integrationguide/readme/changelog
note: >-
  Cardstream versions its Integration Guide (not the wire API) with a dated
  changelog. There is no URL-path API version and no RFC 8594 Sunset/Deprecation
  HTTP header support (form-post API). Integration types and features are
  deprecated with announced dates in the changelog.
versioning:
  scheme: documented-guide-version
  current: V4.24
  current_date: '2026-05-25'
  docs: https://guides.gitbook.io/integrationguide/readme/changelog
deprecation:
  policy_url: null
  sunset_header: false
  practice: >-
    Deprecations are announced with effective dates in the changelog rather than
    via a formal policy page or HTTP headers.
  recent_deprecations:
    - {item: "Nuapay integration type", effective: '2025-11-17', announced: '2025-09-24'}
    - {item: "Nuapay section removed", date: '2025-11-03'}
    - {item: "PBBA section removed", date: '2025-11-03'}
    - {item: "3-D Secure version 1 (removed; 3DS2 only)", date: '2022-05-17'}
sla:
  url: null
  note: No public SLA/uptime target published (B2B2B wholesale model).
status_page: https://status.cardstream.com/
data_retention:
  transaction_and_card_data: ~13 months (acquirer may differ)
deprecated_operations: []