Imported from previous forum
[ original email was from John Cameron - jc@cameronsystems.com ]
The comment for the BeginString tag in the Standard Message Header table in the FIX Transport 1.1 spec says “FIX.4.4 (Always unencrypted, must be first field in message)”.
I believe that the value should be FIXT.1.1.
A note could be added saying that for application versions prior to FIX 5.0, BeginString could take the values such as 4.4 etc.