Please be advised that, as per CH Advisory 25-046, CME Clearing will transition the method for clearing Trade, Allocation Group, and Allocation IDs are generated; from up to 10 numeric digits to up to 52 alphanumeric character IDs instead; with the IDs being unique across CME Clearing.

This project will be implemented in 4 phases: 

Phase 1 - CME Clearing to start sending 52-char IDs in Temporary FIXML Tags Production Date: Monday, March 17, 2025 (New Date)

Phase 2 - CME Clearing to accept either Current ID (10-char) or Temporary Tag (52-char) on Inbound Updates from Firms Production Date: May 19, 2025.

For the full text of this advisory, please click the link below.