- u -

• Undefined : SessionStorageType
• UndefinedPriorityAndPolicy : PriorityAndPolicyTraits
• UnexpectedMessageType : SessionErrorReason
• UnexpectedNextSeqNo : SessionErrorReason
• UnexpectedPreviousUuid : SessionWarningReason
• UnexpectedSbeSchemaVersion : SessionWarningReason
• Unknown : HaltReason
• UnknownMessage : ReqRejReason
• UnknownorInvalid : SecurityTradingStatus
• UnknownSecurity : ReqRejReason
• Unsubscribe : SubscriptionReqType
• UnsupportedMessageType : SessionWarningReason
• UnsupportedScope : ReqRejReason
• Update : OrderUpdateAction