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CME Group internal testing in the Production environment can occur during the weekend. Any trades or market data generated during these tests should be disregarded.

As a reminder, clients can connect to CME Globex services beginning at 10:30 am CT Sundays to prepare for weekly start-up. Clients should ensure all services are disconnected by 5:00 pm. CT Fridays to avoid receiving internal test data.

iLink is the path by which client systems connect to and transact business on the CME Globex platform.

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iLink supports two messaging protocols:

Use this search bar to search topics within iLink Order Entry.

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rootPageiLink Order Entry

Testing and Certification

iLink and Order Entry certification suites are available in AutoCert+. Certifications are required for customers connecting to the following systems. 

For more information, contact Certification Support for Electronic Trading (CSET).

The iLink order entry topic consists of:

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To avoid client systems impacts, CME Group recommends that client systems NOT submit iLink messages containing FIX tags that are not defined in the iLink message specification.