Whisperer Client Impact

Change Overview from CME

New - iLink 3 SBE Schema Update

To support future enhancements for EBS Market on CME Globex, the iLink 3 SBE schema will be updated to version 8 starting on Sunday, June 25.  More information regarding these enhancements will be published in the future EBS Market on CME Globex Notice. The overview of iLink 3 schema updates is now available. 

EBS Market on CME Globex is currently on schema version 7. In order to ease customer development efforts, the new SBE schema files will support Template Extension for iLink 3 messages sent from EBS Client systems to CME Globex. EBS client systems can send iLink 3 messages using schema version 7 or 8; however CME Globex will only send messages using schema version 8. 

For client systems who do not support template extension, the template is not backward compatible and the iLink 3 messages sent from CME Globex cannot be decoded.

EBS Market - Production Rollout

DATE	MESSAGES FROM CLIENT	MESSAGES FROM CME GLOBEX
Currently	V7	V7
June 25 through July 30: Phased launch	V7 or V8 for market segments that support V8	V8 for market segments that support 8
Sunday, July 30, 2023	V7 or V8 for all segments	V8 only
Sunday, October 1, 2023	V8 only	V8 only

Please note: The new schema version 8 will be applied to all Spot, Metal, NDF and eFix instruments on the EBS Globex market segments.

Effective Sunday, October 1, version 8 schema will be the only version supported in production. Client systems can only send version 8 messages.

The new version 8 schema will be available in New Release for customer testing starting on Monday, May 1.

To support the new iLink 3 schema rollout, the CME SFTP site will be updated as follows:

NEW RELEASE: /MSGW/PRODUCTION/TEMPLATES PRODUCTION: /MSGW/PRODUCTION/TEMPLATES
SCHEMA VERSION	CURRENT STATE	OCTOBER 1
V7	Ilinkbinary_v7.xml	n/a
V8	ilinkbinary.xml	ilinkbinary.xml