Type: String
Permits order originators to tie together groups of orders in which trades resulting from orders are associated for a specific purpose, for example the calculation of average execution price for a customer or to associate lists submitted to a broker as waves of a larger program trade.
Added in protocol FIX.4.3
See in: FIX.4.3, FIX.4.4, FIX.5.0, FIX.5.0SP2, FIX.5.0SP2 EP240.