Initial - CHG0110523 - Gas Retail Initiatives B2B Package 1 ¿ Production deployment of r46 schema update

Change Number: CHG0110523

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Gas Hub
Change Title: Gas Retail Initiatives B2B Package 1 ? Production deployment of r46 schema update 
Change Start Date & Time: 23/05/2026 08:00:00
Change End Date & Time: 25/05/2026 18:00:00
Outage Start Date & Time: 23/05/2026 10:00:00
Outage End Date & Time: 23/05/2026 20:00:00
Environment: Production

Participant Impact and Requirements: -There will be a co-ordinated outage where East coast gas participants will be deploying updated systems to move to Schema Version r46 per Gas Retail Initiatives B2B 
Package 1.   
The Western Australian Gas Retail Market will remain on aseXML schema version 40 and is excluded from Package 1.  

This change document ("Cutover Plan") has previously been communicated to all participants via the GRCF and ITWG forums.  Please refer to the approved cutover plan for more details on the outage period and the (optional) PVT activities as part of this deployment activity. 

https://www.aemo.com.au/-/media/files/initiatives/gas-retail-initiatives-b2b-package-1/gas-retail-initiatives-b2b-package-1-may-2026-cutover-plan-v10.pdf?rev=dbeb803b74944c87ab6846cc13eed820&sc_lang=en 

Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities.