generated: '2026-09-17'
method: searched
source: >-
  https://docs.token.io/products/tpp/tech-bulletins/ — individual bulletins fetched as markdown
  twins (tb-1638.md … tb-1542.md) and enumerated from https://docs.token.io/llms.txt
provider: Token.io
providerId: token-io
scheme: numbered Technical Bulletins (TB-nnnn), each dated with an "Issued:" line
url: https://docs.token.io/products/tpp/tech-bulletins/
description: >-
  Token.io does not publish a conventional release-notes page. It publishes a numbered Technical
  Bulletin series inside the developer docs, one page per notice, each carrying an issue date and a
  "What's changing? / Does this change affect you?" structure. 32 bulletins are listed in llms.txt. The series is the advance-notice channel the backward-compatibility policy commits to, and
  the striking thing about its content is that most entries are not about Token.io's own API at
  all — they are notices about the CONNECTED BANKS, which is the honest shape of change for an
  aggregation platform. Current version markers are the API path generations (v1 and v2), not a
  release number.
current_version:
  api: Payments v2 / Banks v2 / Hosted Pages v2
  note: No semantic release number is published for the platform.
window: 2024-11 to 2026-09
entries:
  - id: TB-1638
    date: '2026-09-08'
    title: Notice of Change — Halifax brand change (migrating to Lloyds Banking Group)
    type: bank-change
    breaking: false
  - id: TB-1637
    date: '2026-05-15'
    date_confidence: inferred
    title: Open Banking Improvements — CMA9 v4 API, Lloyds Banking Group
    type: bank-change
    breaking: false
    note: >-
      The bulletin's Issued line reads "15th May" with no year; 2026 is inferred from its position
      between TB-1634 (2026-02-27) and TB-1638 (2026-09-08). Part of the OBL v3 to v4 migration.
  - id: TB-1635
    date: '2026-05-07'
    date_confidence: inferred
    title: Notice of Change — Open Banking Improvements, CMA9 v4 API, Barclays Group
    type: bank-change
    breaking: false
    note: Issued line reads "7th May" with no year; 2026 inferred from sequence position.
  - id: TB-1634
    date: '2026-02-27'
    title: Notice of Change — Open Banking Improvements, CMA9 v4 API, First Trust Bank
    type: bank-change
    breaking: false
  - id: TB-1633
    date: '2026-02-11'
    title: Notice of Change — Open Banking Improvements, CMA9 v4 API, Danske Bank EU
    type: bank-change
    breaking: false
  - id: TB-1632
    date: '2026-02-11'
    title: Notice of Change — Open Banking Improvements, CMA9 v4 API, Danske Bank UK
    type: bank-change
    breaking: false
  - id: TB-1631
    date: '2026-01-06'
    title: Notice of Change — Open Banking Improvements, CMA9 v4 API, Santander Bank UK
    type: bank-change
    breaking: false
  - id: TB-1630
    date: '2025-11-19'
    title: Notice of Change — Open Banking Improvements, OBL v4 API, Allied Irish Bank
    type: bank-change
    breaking: false
  - id: TB-1627
    date: '2025-08-26'
    title: Notice of change — Norisbank and Deutsche Bank Customer ID changes
    type: bank-change
    breaking: false
    affects: Payment requests
  - id: TB-1621
    date: '2025-08-21'
    title: Notice of change — Open Banking Improvements, OBL v4 API, NatWest Group
    type: bank-change
    breaking: false
  - id: TB-1620
    date: '2025-06-04'
    title: Notice of change — Open Banking Improvements, OBL v4 API, HSBC
    type: bank-change
    breaking: false
    note: >-
      The bulletin that opened the CMA9 v3-to-v4 migration: from 2025-06-13 responses differ by
      whether a given bank is on v4 or on v3.1.11.
  - id: TB-1549
    date: '2025-03-03'
    title: Notice of change — sub-TPP id now mandatory in payment initiation requests
    type: api-change
    breaking: true
    affects: Payments v1, Payments v2
    note: >-
      New validation: a TPP processing payments under Token.io's licence must supply a valid
      sub-TPP id. The clearest example in the window of the advance-notice policy being used for a
      genuinely breaking change.
  - id: TB-1542
    date: '2024-11-13'
    title: '`bankId` added to the GET /token-requests/{tokenRequestId}/result response'
    type: api-change
    breaking: false
    note: An additive response property — non-breaking under the published compatibility policy.
summary:
  bulletins_listed_in_docs: 32
  entries_recorded: 13
  latest: TB-1638 (2026-09-08)
  breaking_in_window: 1
  dominant_theme: >-
    UK/EU bank migrations to Open Banking Limited v4 — eight of the last ten bulletins. The change
    surface a Token.io customer must track is mostly the banks behind Token.io, not Token.io.