Indexes

Message Layouts
Session
PreTrade
Trade
PostTrade

Message

Logon (A)

ID11
Abbr NameLogon
PedigreeAdded FIX.2.7
The logon message authenticates a user establishing a connection to a remote system.
Field
Name
Type
Req'd
Comments
Pedigree
Y
MsgType = A
Added FIX.2.7
98
Y
(Always unencrypted)
Added FIX.2.7
108
Y
Note same value used by both sides
Added FIX.3.0
95
Required for some authentication methods
Added FIX.2.7
96
Required for some authentication methods
Added FIX.2.7
141
Indicates both sides of a FIX session should reset sequence numbers
Added FIX.4.1
789
Optional, alternative via counterparty bi-lateral agreement message gap detection and recovery approach (see "Logon Message NextExpectedMsgSeqNum Processing" section)
Added FIX.4.4
383
Can be used to specify the maximum number of bytes supported for messages received
Added FIX.4.2
Specifies the number of repeating RefMsgTypes specified
Added FIX.4.2
464
Can be used to specify that this FIX session will be sending and receiving "test" vs. "production" messages.
Added FIX.4.3
553
Added FIX.4.3
554
Note: minimal security exists without transport-level encryption.
Added FIX.4.3
Y
Added FIX.2.7

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