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This specification provides the message layout for each FIX message type supported by the CME Group MDP 3.0 market data messaging format, including:

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For the maximum supported length for each FIX message tag, refer to the message template.


The FPL Simple Binary Encoding Release Candidate 2 Specification is available here.

Users must be registered with FIX Protocol Organization to access the Simple Binary Encoding Documentation and will need a User ID provided by FPL to logon to the site.