{"id":7168,"date":"2025-08-28T22:36:26","date_gmt":"2025-08-29T03:36:26","guid":{"rendered":"https:\/\/librarytestdev.wpenginepowered.com\/?post_type=doc&p=7168"},"modified":"2025-12-13T12:52:08","modified_gmt":"2025-12-13T18:52:08","slug":"logon-a-message-2","status":"publish","type":"doc","link":"https:\/\/library-staging.tradingtechnologies.com\/tt-fix\/tt-fix-recovery\/supported-application-messages-tt-fix-recovery\/logon-a-message-2\/","title":{"rendered":"Logon (A) Message"},"content":{"rendered":"\n

Logon (A) Message<\/h2>\n\n\n\n
\n

Purpose<\/h3>\n

Used to establish a connection between a FIX client and TT FIX<\/p>\n

Note: <\/strong>Can also be used to submit a FIX\n Recovery\n request<\/a><\/p>\n <\/div>\n\n\n\n

\n

Message Direction<\/h3>\n

From TT FIX to FIX client and from FIX client to TT FIX<\/p>\n <\/div>\n\n\n\n

\n

FIX Logon Message Version Validation<\/h3>\n

FIX tags in Logon messages are validated such that any tags not valid for the FIX version of the Logon message will be rejected. For example, if a customer FIX 4.2 Logon message contains a FIX tag that is valid for FIX 4.4 but not FIX 4.2, that logon will be rejected.<\/p>\n <\/div>\n\n\n\n

Tag Directory<\/h3>\n\n\n\n

Click the links below to navigate to the documentation for that tag.<\/p>\n\n\n

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Using the FIX Tag Directory<\/summary>\n