FIX.Latest_EP287 Message

Logon [type 'A']


The logon message authenticates a user establishing a connection to a remote system. The logon message must be the first message sent by the application requesting to initiate a FIX session.

Pedigree Added FIX.2.7

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Field or ComponentField NameAbbr NameReq'dCommentsPedigree
ComponentStandardHeaderHdrYMsgType = AAdded FIX.2.7
98EncryptMethodEncryptMethodY(Always unencrypted)Added FIX.2.7
108HeartBtIntHeartBtIntYNote same value used by both sidesAdded FIX.3.0
95RawDataLengthRawDataLength Required for some authentication methodsAdded FIX.2.7
96RawDataRawData Required for some authentication methodsAdded FIX.2.7
141ResetSeqNumFlagResetSeqNumFlag Indicates both sides of a FIX session should reset sequence numbersAdded FIX.4.1
789NextExpectedMsgSeqNumNextExpectedMsgSeqNum Optional, alternative via counterparty bi-lateral agreement message gap detection and recovery approach (see Logon Message NextExpectedMsgSeqNum Processing section)Added FIX.4.4
383MaxMessageSizeMaxMsgSz Can be used to specify the maximum number of bytes supported for messages receivedAdded FIX.4.2
ComponentMsgTypeGrpMsgTypeGrp Added EP-1
464TestMessageIndicatorTestMsgInd Can be used to specify that this FIX session will be sending and receiving test vs. production messages.Added FIX.4.3
553UsernameUsername Added FIX.4.3
554PasswordPassword Note: minimal security exists without transport-level encryption.Added FIX.4.3
925NewPasswordNewPassword Specifies a new password for the FIX Logon. The new password is used for subsequent logons.Added EP-1
1400EncryptedPasswordMethodEncPwdMethod Added EP-1
1401EncryptedPasswordLenEncPwdLen Added EP-1
1402EncryptedPasswordEncPwd Added EP-1
1403EncryptedNewPasswordLenEncNewPwdLen Added EP-1
1404EncryptedNewPasswordEncNewPwd Encrypted new password- encrypted via the method specified in the field EncryptedPasswordMethod(1400)Added EP-1
1409SessionStatusSessStat Session status at time of logon. Field is intended to be used when the logon is sent as an acknowledgement from acceptor of the FIX session.Added EP-1
1137DefaultApplVerIDDefApplVerIDYThe default version of FIX messages used in this session.Added EP-1
1407DefaultApplExtIDDfltApplExtID The default extension pack for FIX messages used in this sessionAdded EP-1
1408DefaultCstmApplVerIDDefaultCstmApplVerID The default custom application version (dictionary) for FIX messages used in this sessionAdded EP-1
58TextTxt Available to provide a response to logon when used as a logon acknowledgement from acceptor back to the logon initiator.Added EP-1
354EncodedTextLenEncTxtLen Must be set if EncodedText field is specified and must immediately precede it.Added EP-1
355EncodedTextEncTxt Encoded (non-ASCII characters) representation of the Text field in the encoded format specified via the MessageEncoding field.Added EP-1
ComponentStandardTrailerTrlrYAdded FIX.2.7