Fields By Tag

Message sequence number of first message in range to be resent

Identifies beginning of new message and protocol version. ALWAYS FIRST FIELD IN MESSAGE. (Always unencrypted)

Message length, in bytes, is verified by counting the number of characters in the message following the BodyLength (9) field up to, and including, the delimiter immediately preceding the CheckSum (10) field.

Three byte, simple checksum (see Volume 2: "CheckSum Calculation" for description). ALWAYS LAST FIELD IN MESSAGE; i.e. serves, with the trailing <SOH>, as the end-of-message delimiter. Always defined as three characters. (Always unencrypted)

"Message sequence number of last message in range to be resent. If request is for a single message BeginSeqNo (7) = EndSeqNo. If request is for all messages subsequent to a particular message, EndSeqNo = "0" (representing infinity)."

Integer message sequence number.

Defines message type ALWAYS THIRD FIELD IN MESSAGE. (Always unencrypted)

New sequence number

Indicates possible retransmission of message with this sequence number

Reference message sequence number

Assigned value used to identify firm sending message.

Assigned value used to identify specific message originator (desk, trader, etc.)

Time of message transmission (always expressed in UTC (Universal Time Coordinated, also known as "GMT")

Assigned value used to identify receiving firm.

Assigned value used to identify specific individual or unit intended to receive message. "ADMIN" reserved for administrative messages not intended for a specific user.

Free format text string

Electronic signature

Length of encrypted message

Actual encrypted data stream

Number of bytes in signature field.

Number of bytes in raw data field.

Unformatted raw data, can include bitmaps, word processor documents, etc.

Indicates that message may contain information that has been sent under another sequence number.

Method of encryption.

Heartbeat interval (seconds)

Identifier included in Test Request message to be returned in resulting Heartbeat

Assigned value used to identify firm originating message if the message was delivered by a third party i.e. the third party firm identifier would be delivered in the SenderCompID field and the firm originating the message in this field.

Assigned value used to identify specific message originator (i.e. trader) if the message was delivered by a third party

Original time of message transmission (always expressed in UTC (Universal Time Coordinated, also known as "GMT") when transmitting orders as the result of a resend request.

Indicates that the Sequence Reset message is replacing administrative or application messages which will not be resent.

Assigned value used to identify the firm targeted to receive the message if the message is delivered by a third party i.e. the third party firm identifier would be delivered in the TargetCompID (56) field and the ultimate receiver firm ID in this field.

Assigned value used to identify specific message recipient (i.e. trader) if the message is delivered by a third party

Indicates that the both sides of the FIX session should reset sequence numbers.

Assigned value used to identify specific message originator's location (i.e. geographic location and/or desk, trader)

Assigned value used to identify specific message destination's location (i.e. geographic location and/or desk, trader)

Assigned value used to identify specific message originator's location (i.e. geographic location and/or desk, trader) if the message was delivered by a third party

Assigned value used to identify specific message recipient's location (i.e. geographic location and/or desk, trader) if the message was delivered by a third party

Length of the XmlData data block.

Actual XML data stream (e.g. FIXML). See approriate XML reference (e.g. FIXML). Note: may contain embedded SOH characters.

Type of message encoding (non-ASCII (non-English) characters) used in a message's "Encoded" fields.

Byte length of encoded (non-ASCII characters) EncodedText (355) field.

Encoded (non-ASCII characters) representation of the Text (58) field in the encoded format specified via the MessageEncoding (347) field. If used, the ASCII (English) representation should also be specified in the Text field.

The last MsgSeqNum (34) value received by the FIX engine and processed by downstream application, such as trading engine or order routing system. Can be specified on every message sent. Useful for detecting a backlog with a counterparty.

The tag number of the FIX field being referenced.

The MsgType (35) of the FIX message being referenced.

Code to identify reason for a session-level Reject message.

Maximum number of bytes supported for a single message.

Number of MsgTypes (35) in repeating group.

Specifies the direction of the messsage.

Indicates whether or not this FIX Session is a "test" vs. "production" connection. Useful for preventing "accidents".

Userid or username.

Password or passphrase.

Number of HopCompID entries in repeating group.

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.

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.

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.

Next expected MsgSeqNum value to be received.

Specifies a new password for the FIX Logon. The new password is used for subsequent logons

Specifies the service pack release being applied at message level. Enumerated field with values assigned at time of service pack release

Specifies a custom extension to a message being applied at the message level. Enumerated field

Specifies the service pack release being applied to a message at the session level. Enumerated field with values assigned at time of service pack release. Uses same values as ApplVerID

Specifies a custom extension to a message being applied at the session level.

Specifies the service pack release being applied, by default, to message at the session level. Enumerated field with values assigned at time of service pack release. Uses same values as ApplVerID

Identifies the Extension Pack which is to be applied to the FIX version specified in the ApplVerID.

Encrypted new password- encrypted via the method specified in the field EncryptedPasswordMethod(1400)

Specified the extension pack being applied to a message

The default extension pack for FIX messages used in this session

The default custom application version (dictionary) for FIX messages used in this session

Session status at time of logout

Indicates that this Application Version (RefApplVerID(1130), RefApplExtID(1406),RefCstmApplVerID(1131)) is the default for the RefMsgType(372) field