generated: '2026-07-27'
method: searched
source: https://dev.aemo.com.au/developer/apis?api-version=2022-04-01-preview
description: 'AEMO publishes no dated, developer-facing API changelog or release-notes feed. Change is communicated
  to market participants through the IT change and release management programme (a fortnightly forward schedule
  of planned IT changes and change windows) and through Market Notices filtered to MARKET SYSTEMS. What the API
  platform itself exposes is the live version inventory: every API is registered in Azure API Management inside
  a version set, and superseded versions stay published alongside their replacements. That inventory is captured
  below as the closest machine-readable record of API evolution AEMO makes available.'
scheme: apim-version-sets (uri-path versions, concurrent publication)
dated_entries_published: false
release_management:
  url: https://www.aemo.com.au/energy-systems/market-it-systems/it-change-and-release-management
  cadence: fortnightly forward schedule of planned IT changes
  covers:
  - planned maintenance
  - IT change and outage windows
  - status history of AEMO business services
market_notices:
  url: https://aemo.com.au/market-notices?marketNoticeFacets=MARKET+SYSTEMS
  covers:
  - market systems service interruptions and resolutions
catalogue_snapshot:
  taken: '2026-07-27'
  apis_published: 74
  operations_published: 771
  source: https://dev.aemo.com.au/developer/apis?api-version=2022-04-01-preview
version_sets_with_multiple_published_versions:
- version_set: balancing-reports
  apis:
  - api_id: balancing-reports-v2
    name: Balancing Reports v2
    version: v2
    path: WEM/balancing
  - api_id: balancing-reports-v2-1
    name: Balancing Reports v2.1
    version: v2.1
    path: WEM/balancing
  - api_id: balancing-reports-v2-2
    name: Balancing Reports v2.2
    version: v2.2
    path: WEM/balancing
  - api_id: balancing-reports-v2-3
    name: Balancing Reports v2.3
    version: v2.3
    path: WEM/balancing
  - api_id: balancing-reports-v2-4
    name: Balancing Reports v2.4
    version: v2.4
    path: WEM/balancing
  - api_id: balancing-reports-v2-5
    name: Balancing Reports v2.5
    version: v2.5
    path: WEM/balancing
- version_set: 5MS-hubmsgmgt-v2
  apis:
  - api_id: hubmsgmgt-v1
    name: HubMessageManagement
    version: '1.0'
    path: ws/HubMessageManagement
  - api_id: hubmsgmgt-v2
    name: HubMessageManagementV2
    version: v2
    path: HubMessageManagement
- version_set: pre-balancing-reports
  apis:
  - api_id: pre-balancing-reports-v6
    name: Pre-Balancing Reports v6
    version: v6
    path: WEM/reports
  - api_id: pre-balancing-reports-v7
    name: Pre-Balancing Reports v7
    version: v7
    path: WEM/reports
  - api_id: pre-balancing-reports-v7-1
    name: Pre-Balancing Reports v7.1
    version: v7.1
    path: WEM/reports
  - api_id: pre-balancing-reports-v8
    name: Pre-Balancing Reports v8
    version: v8
    path: WEM/reports
- version_set: system-management-reports
  apis:
  - api_id: system-management-reports-v2
    name: System Management Reports v2
    version: v2
    path: WEM/sm
  - api_id: system-management-reports-v2-1
    name: System Management Reports v2.1
    version: v2.1
    path: WEM/sm
  - api_id: system-management-reports-v2-2
    name: System Management Reports v2.2
    version: v2.2
    path: WEM/sm
  - api_id: system-management-reports-v2-3
    name: System Management Reports v2.3
    version: v2.3
    path: WEM/sm
  - api_id: system-management-reports-v2-4
    name: System Management Reports v2.4
    version: v2.4
    path: WEM/sm
  - api_id: system-management-reports-v2-5
    name: System Management Reports v2.5
    version: v2.5
    path: WEM/sm
  - api_id: system-management-reports-v2-6
    name: System Management Reports v2.6
    version: v2.6
    path: WEM/sm
entries: []
cross_references:
  lifecycle: lifecycle/aemo-lifecycle.yml