Tag	Name	Type	Req	Description	Added
8	BeginString	char	Y	FIX.4.0 (Always unencrypted, must be first field in message)	FIX.4.0
9	BodyLength	int	Y	(Always unencrypted, must be second field in message)	FIX.4.0
35	MsgType	char	Y	(Always unencrypted, must be third field in message) ▶ 27 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 Order - Single E NewOrderList Order - List F OrderCancelRequest Order Cancel Request G OrderCancelReplaceRequest Order Cancel/Replace Request H OrderStatusRequest Order Status Request J AllocationInstruction Allocation K ListCancelRequest List Cancel Request L ListExecute List Execute M ListStatusRequest List Status Request N ListStatus List Status P AllocationInstructionAck Allocation ACK Q DontKnowTrade Dont Know Trade (DK) R QuoteRequest Quote Request S Quote Quote	FIX.4.0
49	SenderCompID	char	Y	(Always unencrypted)	FIX.4.0
56	TargetCompID	char	Y	(Always unencrypted)	FIX.4.0
115	OnBehalfOfCompID	char	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	char	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	int	Y	(Can be embedded within encrypted data section.)	FIX.4.0
50	SenderSubID	char	N	(Can be embedded within encrypted data section.)	FIX.4.0
57	TargetSubID	char	N	"ADMIN" reserved for administrative messages not intended for a specific user. (Can be embedded within encrypted data section.)	FIX.4.0
116	OnBehalfOfSubID	char	N	Trading partner SubID used when delivering messages via a third party. (Can be embedded within encrypted data section.)	FIX.4.0
129	DeliverToSubID	char	N	Trading partner SubID used when delivering messages via a third party. (Can be embedded within encrypted data section.)	FIX.4.0
43	PossDupFlag	char	N	Always required for retransmissions, 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	char	N	Required when message may be duplicate of another message sent under a different sequence number. (Can be embedded within encrypted data section.)	FIX.4.0
52	SendingTime	time	Y	(Can be embedded within encrypted data section.)	FIX.4.0
122	OrigSendingTime	time	N	Required for message resends. If data is not available set to same value as SendingTime (Can be embedded within encrypted data section.)	FIX.4.0

Tag	Name	Type	Req	Description	Added
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	char	Y	(Always unencrypted, always last field in message)	FIX.4.0