- d -

• Day : SimpleTimeInForce , TimeInForce
• December : Month
• DecodingError : TerminationCode , SessionErrorReason
• Dedicated : ThreadingModel
• Default : ThreadingModel
• deferred : FutureStatus
• Disconnected : SessionStateId
• Disorder : TcpInfo::TcpCaState
• DoNotCancelOnDisconnectOrTerminate : CancelOnDisconnectType
• DuplicateSessionConnection : EstablishRejectCode , NegotiationRejectCode