Type: char
Reference identifier to be used with Replace and Cancel AllocTransType records.
(Prior to FIX 4.1 this field was of type int)
Added in protocol FIX.2.7
See in: FIX.4.0, FIX.4.2, FIX.4.3, FIX.4.4, FIX.5.0, FIX.5.0SP1, FIX.5.0SP2, FIX.5.0SP2 EP240.