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.
- Quote Cancel Acknowledgment (tag 35-MsgType=b, Tag 9775--UnsolicitedCancelType=A, B, C, D, E, F or H)
- Only for Unsolicited Quote Cancel
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