On Sep. 3, 2026, CME issued Advisory Notice 26-293 on the ID transition, noting that under Advisory 25-311 Phase 3 will be the final phase of the project.
The temporary IDs will no longer be sent once the longer IDs are being sent.
On Aug. 14, CME issue notice on allocation ID transition project.
CME issued notice that it will transition updated clearing trade, allocation group, and allocation IDs, from up to 10 numeric digits to 26-52 alphanumeric character IDs.
Allocation ID Transition
Firms will need to be able to support the longer IDs by Phase 3 on outbound and inbound clearing confirm messages.
Production Target date is trade date Nov. 16, 2026; testing to begin Aug. 26, 2026.
Firms will no longer be able to provide Trade IDs when adding pit Trades or transfers.
If a new pit trade, transfer is submitted to FEC including a TrdID, value will be echoed back in RptRefID, similar to behavior when value is submitted in RptID by Firms.
In event firm submits a new pit trade or transfer and includes values in both RptID and TrdID, RptID value will be echoed back in RptRefID, and value in TrdID will be ignored.
Trade/Group/Allocation IDs will display only the last 10 characters of the ID in current ID fields, with the full ID available as well.
Trade/Group/Allocation IDs will display only the last 10 characters of the ID in the current ID fields when it comes to trade reports.
Effectiveness
The notice becomes effective on Nov. 16, 2026.
Sep. 2026 CME Phase 3 Advisory
On Sep. 3, 2026, CME issued Advisory Notice 26-293 on the ID transition, noting that under Advisory 25-311 Phase 3 will be the final phase of the project.
The temporary IDs will no longer be sent once the longer IDs are being sent.
