| ◈ StandardHeader [Component] | | Y | MsgType = 4 | FIX.2.7 |
| 8 | BeginString | String | Y | FIXT.1.1 (Always unencrypted, must be first field in message) | FIX.4.0 |
| 9 | BodyLength | Length | Y | (Always unencrypted, must be second field in message) | FIX.4.0 |
| 35 | MsgType | String | Y | (Always unencrypted, must be third field in message)
▶ 101 enum values
| Value | Name | Description |
| 0 | Heartbeat | Heartbeat | | 1 | TestRequest | Test Request | | 2 | ResendRequest | Resend Request | | 3 | Reject | Reject | | 4 | SequenceReset | Sequence Reset | | 5 | Logout | Logout | | 6 | IOI | Indication of Interest | | 7 | Advertisement | Advertisement | | 8 | ExecutionReport | Execution Report | | 9 | OrderCancelReject | Order Cancel Reject | | A | Logon | Logon | | B | News | News | | C | Email | Email | | D | NewOrderSingle | New Order - Single | | E | NewOrderList | New Order - List | | F | OrderCancelRequest | Order Cancel Request | | G | OrderCancelReplaceRequest | Order Cancel/Replace Request (a.k.a. Order Modification Request) | | H | OrderStatusRequest | Order Status Request | | J | AllocationInstruction | Allocation Instruction | | K | ListCancelRequest | List Cancel Request | | L | ListExecute | List Execute | | M | ListStatusRequest | List Status Request | | N | ListStatus | List Status | | P | AllocationInstructionAck | Allocation Instruction Ack | | Q | DontKnowTrade | Don't Know Trade (DK) | | R | QuoteRequest | Quote Request | | S | Quote | Quote | | T | SettlementInstructions | Settlement Instructions | | V | MarketDataRequest | Market Data Request | | W | MarketDataSnapshotFullRefresh | Market Data - Snapshot/Full Refresh | | X | MarketDataIncrementalRefresh | Market Data - Incremental Refresh | | Y | MarketDataRequestReject | Market Data Request Reject | | Z | QuoteCancel | Quote Cancel | | a | QuoteStatusRequest | Quote Status Request | | b | MassQuoteAcknowledgement | Mass Quote Acknowledgement | | c | SecurityDefinitionRequest | Security Definition Request | | d | SecurityDefinition | Security Definition | | e | SecurityStatusRequest | Security Status Request | | f | SecurityStatus | Security Status | | g | TradingSessionStatusRequest | Trading Session Status Request | | h | TradingSessionStatus | Trading Session Status | | i | MassQuote | Mass Quote | | j | BusinessMessageReject | Business Message Reject | | k | BidRequest | Bid Request | | l | BidResponse | Bid Response (lowercase L) | | m | ListStrikePrice | List Strike Price | | n | XMLNonFIX | XML message (e.g. non FIX Msg Type) | | o | RegistrationInstructions | Registration Instructions | | p | RegistrationInstructionsResponse | Registration Instructions Response | | q | OrderMassCancelRequest | Order Mass Cancel Request | | r | OrderMassCancelReport | Order Mass Cancel Report | | s | NewOrderCross | New Order - Cross | | t | CrossOrderCancelReplaceRequest | Cross Order Cancel/Replace Request (a.k.a. Cross Order Modification Request) | | u | CrossOrderCancelRequest | Cross Order Cancel Request | | v | SecurityTypeRequest | Security Type Request | | w | SecurityTypes | Security Types | | x | SecurityListRequest | Security List Request | | y | SecurityList | Security List | | z | DerivativeSecurityListRequest | Derivative Security List Request | | AA | DerivativeSecurityList | Derivative Security List | | AB | NewOrderMultileg | New Order - Multileg | | AC | MultilegOrderCancelReplace | Multileg Order Cancel/Replace (a.k.a. Multileg Order Modification Request) | | AD | TradeCaptureReportRequest | Trade Capture Report Request | | AE | TradeCaptureReport | Trade Capture Report | | AF | OrderMassStatusRequest | Order Mass Status Request | | AG | QuoteRequestReject | Quote Request Reject | | AH | RFQRequest | RFQ Request | | AI | QuoteStatusReport | Quote Status Report | | AJ | QuoteResponse | Quote Response | | AK | Confirmation | Confirmation | | AL | PositionMaintenanceRequest | Position Maintenance Request | | AM | PositionMaintenanceReport | Position Maintenance Report | | AN | RequestForPositions | Request For Positions | | AO | RequestForPositionsAck | Request For Positions Ack | | AP | PositionReport | Position Report | | AQ | TradeCaptureReportRequestAck | Trade Capture Report Request Ack | | AR | TradeCaptureReportAck | Trade Capture Report Ack | | AS | AllocationReport | Allocation Report (a.k.a. Allocation Claim) | | AT | AllocationReportAck | Allocation Report Ack (a.k.a. Allocation Claim Ack) | | AU | ConfirmationAck | Confirmation Ack (a.k.a. Affirmation) | | AV | SettlementInstructionRequest | Settlement Instruction Request | | AW | AssignmentReport | Assignment Report | | AX | CollateralRequest | Collateral Request | | AY | CollateralAssignment | Collateral Assignment | | AZ | CollateralResponse | Collateral Response | | BA | CollateralReport | Collateral Report | | BB | CollateralInquiry | Collateral Inquiry | | BC | NetworkCounterpartySystemStatusRequest | Network Counterparty System Status Request | | BD | NetworkCounterpartySystemStatusResponse | Network Counterparty System Status Response | | BE | UserRequest | User Request | | BF | UserResponse | User Response | | BG | CollateralInquiryAck | Collateral Inquiry Ack | | BH | ConfirmationRequest | Confirmation Request | | BI | TradingSessionListRequest | Trading Session List Request | | BJ | TradingSessionList | Trading Session List | | BK | SecurityListUpdateReport | Security List Update Report | | BL | AdjustedPositionReport | Adjusted Position Report | | BM | AllocationInstructionAlert | Allocation Instruction Alert | | BN | ExecutionAcknowledgement | Execution Acknowledgement | | BO | ContraryIntentionReport | Contrary Intention Report | | BP | SecurityDefinitionUpdateReport | Security Definition Update Report |
| FIX.4.0 |
| 1128 | ApplVerID | String | N | Indicates application version using a service pack identifier. The ApplVerID applies to a specific message occurrence.
▶ 8 enum values
| Value | Name | Description |
| 0 | FIX27 | FIX27 | | 1 | FIX30 | FIX30 | | 2 | FIX40 | FIX40 | | 3 | FIX41 | FIX41 | | 4 | FIX42 | FIX42 | | 5 | FIX43 | FIX43 | | 6 | FIX44 | FIX44 | | 7 | FIX50 | FIX50 |
| FIX.4.4 |
| 1129 | CstmApplVerID | String | N | Used to support bilaterally agreed custom functionality | FIX.4.4 |
| 49 | SenderCompID | String | Y | (Always unencrypted) | FIX.4.0 |
| 56 | TargetCompID | String | Y | (Always unencrypted) | FIX.4.0 |
| 115 | OnBehalfOfCompID | String | N | Trading partner company ID used when sending messages via a third party (Can be embedded within encrypted data section.) | FIX.4.0 |
| 128 | DeliverToCompID | String | N | Trading partner company ID used when sending messages via a third party (Can be embedded within encrypted data section.) | FIX.4.0 |
| 90 | SecureDataLen | Length | N | Required to identify length of encrypted section of message. (Always unencrypted) | FIX.4.0 |
| 91 | SecureData | data | N | Required when message body is encrypted. Always immediately follows SecureDataLen field. | FIX.4.0 |
| 34 | MsgSeqNum | SeqNum | Y | (Can be embedded within encrypted data section.) | FIX.4.0 |
| 50 | SenderSubID | String | N | (Can be embedded within encrypted data section.) | FIX.4.0 |
| 142 | SenderLocationID | String | N | Sender's LocationID (i.e. geographic location and/or desk) (Can be embedded within encrypted data section.) | FIX.4.1 |
| 57 | TargetSubID | String | N | "ADMIN" reserved for administrative messages not intended for a specific user. (Can be embedded within encrypted data section.) | FIX.4.0 |
| 143 | TargetLocationID | String | N | Trading partner LocationID (i.e. geographic location and/or desk) (Can be embedded within encrypted data section.) | FIX.4.1 |
| 116 | OnBehalfOfSubID | String | N | Trading partner SubID used when delivering messages via a third party. (Can be embedded within encrypted data section.) | FIX.4.0 |
| 144 | OnBehalfOfLocationID | String | N | Trading partner LocationID (i.e. geographic location and/or desk) used when delivering messages via a third party. (Can be embedded within encrypted data section.) | FIX.4.1 |
| 129 | DeliverToSubID | String | N | Trading partner SubID used when delivering messages via a third party. (Can be embedded within encrypted data section.) | FIX.4.0 |
| 145 | DeliverToLocationID | String | N | Trading partner LocationID (i.e. geographic location and/or desk) used when delivering messages via a third party. (Can be embedded within encrypted data section.) | FIX.4.1 |
| 43 | PossDupFlag | Boolean | N | Always required for retransmitted messages, whether prompted by the sending system or as the result of a resend request. (Can be embedded within encrypted data section.)
▶ 2 enum values
| Value | Name | Description |
| N | OriginalTransmission | Original transmission | | Y | PossibleDuplicate | Possible duplicate |
| FIX.4.0 |
| 97 | PossResend | Boolean | N | Required when message may be duplicate of another message sent under a different sequence number. (Can be embedded within encrypted data section.)
▶ 2 enum values
| Value | Name | Description |
| N | OriginalTransmission | Original Transmission | | Y | PossibleResend | Possible Resend |
| FIX.4.0 |
| 52 | SendingTime | UTCTimestamp | Y | (Can be embedded within encrypted data section.) | FIX.4.0 |
| 122 | OrigSendingTime | UTCTimestamp | N | Required for message resent as a result of a ResendRequest. If data is not available set to same value as SendingTime (Can be embedded within encrypted data section.) | FIX.4.0 |
| 212 | XmlDataLen | Length | N | Required when specifying XmlData to identify the length of a XmlData message block. (Can be embedded within encrypted data section.) | FIX.4.2 |
| 213 | XmlData | data | N | Can contain a XML formatted message block (e.g. FIXML). Always immediately follows XmlDataLen field. (Can be embedded within encrypted data section.)
See Volume 1: FIXML Support | FIX.4.2 |
| 347 | MessageEncoding | String | N | Type of message encoding (non-ASCII characters) used in a message’s "Encoded" fields. Required if any "Encoding" fields are used. | FIX.4.2 |
| 369 | LastMsgSeqNumProcessed | SeqNum | N | The last MsgSeqNum value received by the FIX engine and processed by downstream application, such as trading system or order routing system. Can be specified on every message sent. Useful for detecting a backlog with a counterparty. | FIX.4.2 |
| ◈ HopGrp [Component] | | N | Number of repeating groups of historical "hop" information. Only applicable if OnBehalfOfCompID is used, however, its use is optional. Note that some market regulations or counterparties may require tracking of message hops. | FIX.4.4 |
| 627 | NoHops | NumInGroup | N | Number of HopCompID entries in repeating group. | FIX.4.4 |
| 628 | HopCompID | String | N | Assigned value used to identify the third party firm which delivered a specific message either from the firm which originated the message or from another third party (if multiple "hops" are performed). It is recommended that this value be the SenderCompID (49) of the third party.
Applicable when messages are communicated/re-distributed via third parties which function as service bureaus or "hubs". Only applicable if OnBehalfOfCompID (115) is being used. | FIX.4.4 |
| 629 | HopSendingTime | UTCTimestamp | N | Time that HopCompID (628) sent the message. It is recommended that this value be the SendingTime (52) of the message sent by the third party.
Applicable when messages are communicated/re-distributed via third parties which function as service bureaus or "hubs". Only applicable if OnBehalfOfCompID (115) is being used. | FIX.4.4 |
| 630 | HopRefID | SeqNum | N | Reference identifier assigned by HopCompID (628) associated with the message sent. It is recommended that this value be the MsgSeqNum (34) of the message sent by the third party.
Applicable when messages are communicated/re-distributed via third parties which function as service bureaus or "hubs". Only applicable if OnBehalfOfCompID (115) is being used. | FIX.4.4 |
| 123 | GapFillFlag | Boolean | N | Indicates that the Sequence Reset message is replacing administrative or application messages which will not be resent.
▶ 2 enum values
| Value | Name | Description |
| N | SequenceReset | Sequence Reset, Ignore Msg Seq Num (N/A For FIXML - Not Used) | | Y | GapFillMessage | Gap Fill Message, Msg Seq Num Field Valid |
| FIX.4.0 |
| 36 | NewSeqNo | SeqNum | Y | New sequence number | FIX.2.7 |
| ◈ StandardTrailer [Component] | | Y | The standard FIX message trailer | FIX.2.7 |
| 93 | SignatureLength | Length | N | Required when trailer contains signature. Note: Not to be included within SecureData field | FIX.4.0 |
| 89 | Signature | data | N | Note: Not to be included within SecureData field | FIX.4.0 |
| 10 | CheckSum | String | Y | (Always unencrypted, always last field in message) | FIX.4.0 |