New Mandatory iLink Tags Effective Sunday, June 5, 2011, new mandatory FIX tags will be introduced on inbound and outbound iLink messages to enhance customer support and assist in market oversight. The new tags will be used to indentify: * Front-end system * Automated trading indicator flag * Country of origin All customer order routing systems must support and accurately populate these new tags, and complete the mandatory certification via AutoCert+ by June 5. The new tags are available in New Release for customer testing. There are no impacts to FIX/FAST market data with this launch. A client impact assessment is available online http://www.cmegroup.com/globex/files/newmandatoryilinktags.pdf Source: CME Globex Notices: October 4, 2010