Discussion Forums

Standard Header
Harlan Nebenhaus / SGCowen Securities Corp
18 Jan 2001 6:01PM ET

Regarding a fix message and the header ... According to the fix 4.x specs "The general format of a FIX message is a standard header followed by the message body fields and terminated with a standard trailer".

From this, can we safely assume there should never be a user defined field in the standard header? So, for any valid fix message - it must conform EXACTLY to the specification of the standard header.