Here is a list of all enum values with links to the classes they belong to:

- o -

• October : Month
• Open : TradingSessionSubID, TcpInfo::TcpCaState
• OperationalError : CrossedIndicator
• OptionExerciseQty : PosType
• OrderCancelledDueToOperationalError : ExecRestatementReason
• OrderCancelledFirmsoftDueToOperationalError : ExecRestatementReason
• OrderCancelReplaceRequest : MessageType
• OrderCancelRequest : MessageType
• OrderMassActionFromClientRequest : ExecRestatementReason, ExecRestatementReasonValidForMassCancel
• OrderMassActionReport : MessageType
• OrderMassActionRequest : MessageType
• Other : MassActionRejectReason
• OutOfRange : RetransmitRejectCode