- a -

• Accepted : AllocStatus , MassActionResponse , PosMaintStatus , QuoteStatus
• AcceptSecurityAsProposalWithRevisions : SecurityResponseType
• AcceptSecurityProposalAsIs : SecurityResponseType
• AllocationInstruction : MessageType
• AllocationReport : MessageType
• AllOrdersForATradingSession : MassActionScope
• AllOrNoneCross : CrossType
• AlreadyEstablished : EstablishRejectCode
• AlreadyNegotiated : NegotiationRejectCode
• April : Month
• AsyncFileBased : SessionStorageType
• AsyncFileBasedStorageQueueOverflow : SessionWarningReason
• AtTheClose : TimeInForce
• August : Month
• AuthenticationInProgress : EstablishRejectCode , NegotiationRejectCode
• AutomaticExercise : PosTransType
• AwaitConfirmingTerminate : SessionStateId
• AwaitEstablishmentAck : SessionStateId
• AwaitNegotiationResponse : SessionStateId