Field Username (553) - FIX Protocol FIX.5.0SP2

Type: String

Userid or username.

Added in protocol FIX.4.3

See in: FIX.4.3, FIX.4.4, FIX.5.0, FIX.5.0SP1, FIX.5.0SP2 EP240, FIXT.1.1.