Description
Type: String
Identifies beginning of new message and protocol version. ALWAYS FIRST FIELD IN MESSAGE. (Always unencrypted)
Valid values:
- FIX.4.2 = Session profile FIX.4.2
- FIX.4.4 = Session profile FIX4
-
FIXT.1.1 = Session profile FIXT or LFXIT
The choice between FIXT and LFIXT is subject to counterparty agreement.