From FIXwiki

InstrAttribType Value 29

Value	Name	Field(tag)	First introduced	Deprecated
29	TradeableIndicator	InstrAttribType(871)	FIX.5.0

Specifies whether an instrument can be traded or not.

Notes

Error in FIX Specification:

In the Glossary (Spec volume 1) this value is spelled "Tradable...". In Volume 6 it is referred to as "Tradeable...". The spec should settle on a single consistent spelling.