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For CGW, Session ID can exist on only one CGW.

For MSGW, Session IDs are shared across multiple MSGWs. Customers utilize a single Session ID, password, and port across all MSGWs.

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  • Quote Cancel Acknowledgment (tag 35-MsgType=b, Tag 9775--UnsolicitedCancelType=ABCDEF or H)
    • Only for Unsolicited Quote Cancel      
Note

To ensure the 5979 timestamp never reflects an out-of-sequence event, in certain cases CME Globex will increment timestamp value. These forced timestamps still accurately reflect the sequence of events on the MSGW.

iLink Unsolicited Outbound Message Scenario

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