There will be impacts to the Online DA v2, Online State DA and Common inbound APIs.
You can access the relevant API release notes below which outline the impacted operations, attributes and any actions:
• Online Development application service v2 and Common inbound API
• State Development application service API v2
Temporary backward compatibility support will be provided from 1 July 2026 to assist with the transition. This will allow existing council integrations and development application service lodgement processing to continue operating.
We will be removing the backward compatibility in 2027 and will provide a further update once available. To stay informed we encourage you to subscribe to our API communications mailing list.