|Critical Update: New tag 1057 in iLink Options Fill Messages|
Due to customer feedback, tag 1057-AgressorFlag will not be added to any additional execution report - leg fills for options strategies listed on CME Globex. This flag will continue to be sent on the execution report - leg fills for all Interest Rate options strategies pending further notice.
Tag 1057 is still scheduled to be added to the iLink execution report - fill messages for all outrights and spread summary fills on February 1, as described in the FIX/FAST and iLink Message Enhancements Client Impact.
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