*Update* SEMOPX: M7 Maintenance & V7 API Go-Live - 18/08/2026
Affected Period
Status
Closed
Category
Semopx
Run Type
Created
Last Updated
Dear Member,
Please be informed that the M7 trading system will be under maintenance on 18/08/2026 between 18:40 and 21:15 BST
This maintenance relates to the ECC monthly maintenance window and go-live of the remainder of M7 6.21 release, including:
- Rollout of Request/Response v7 API for order management messages, enabling faster access to trading opportunities
- Default value in LoginReq for orderbookBatching set to LONG (as a reminder, to receive SHORT-batched order book delta messages, please explicitly set value to SHORT in the login request)
- TC540 Report decommissioning: the generation of the TC540 report will be discontinued on 13/08/2026 in ASIM and 19/08/2026 in PROD
Please note that the Request/Response v7 API for order management messages will be activated on 20/08/2026 at 09:30 BST.
For further details regarding these change, please refer to our previous communications (link).
Additionally, please note that the generation of the TC540 report will be discontinued on 13/08/2026 in ASIM and 19/08/2026 in PROD, as the service is rarely used and the majority of customers have transitioned to API-based data retrieval, using either their own implementation or an ISV. This approach provides a more flexible, reliable, and future-proof alternative.
We kindly ask you to log out from ComTrader or your API before the maintenance begins and to restart ComTrader or your API once it is finished.
We also would like to remind you to use the latest version of ComTrader available here: M7 Energy - SEMO ComTrader download site
Please feel free to inform your colleagues about this maintenance, and to contact us on our hotlines for any questions you may have.
Kind regards.
SEMOpx Team