generated: '2026-07-22'
method: searched
source: https://www.hkex.com.hk/-/media/HKEX-Market/Services/Next-Generation-Post-Trade-Programme/Fini/FINI-API-User-Guide-v0,-d-,41.pdf
docs: https://www.hkex.com.hk/Services/Platform-Services/FINI?sc_lang=en
description: >-
  Dated change history of the HKEX FINI API, captured from the revision table
  of the public FINI API User Guide (v0.41 lineage). HKEX evolves the API by
  republishing the guide; there is no separate hosted changelog page.
versioning:
  scheme: dated revisions of the FINI API User Guide; endpoints carry a /v1 URI-path version
  current: 8 November 2022 revision (guide v0.41)
  detail: lifecycle/hkex-lifecycle.yml
entries:
- date: '2022-11-08'
  latest: true
  highlights:
  - Added table of contents for other FINI User Guides
  - Amended Agent and Machine Profile setup references to the HKEX Access Management User Guide
- date: '2022-09-09'
  breaking:
  - Removed upwards price flexibility-related fields (Enquire IPO Reference Data and Enquire EIPO Funding endpoints)
  highlights:
  - Amended Java sample code for generating the X-FINI-SIGNATURE header
  - Added section explaining the structure of unsuccessful responses
- date: '2022-07-13'
  breaking:
  - Agent Profile JWT (G1) "sub" field amended from "hkexapi" to the user's Company ID in Client Connect
- date: '2022-05-27'
  breaking:
  - All data payloads unified as arrays (from objects)
  - IPO identifier unified as "ipoID"
  highlights:
  - Supplemented end-to-end encryption procedures
  - Added warrants fields for SPACs (Enquire IPO Reference Data endpoint)
  - Renamed adviser fields for SFC Code of Conduct
  - IPO Status values updated for "Suspended" and "Cancelled"
- date: '2022-01-05'
  highlights:
  - Initial version released to market participants in preparation of market testing