The following properties are required - although all are provided with default values.
More:
AutoCheckdigit
BackColor
BarcodeHeight
BarcodeWidth
BarRatio
BearerSize
BorderWidth
BothBearers
Caption
CodeType
CodeTypeValue
Controls
ExtendBearers
Extra1
Extra2
Font
ForeColor
Indicators
MarginSize
Mirror
Orientation
Reduction
ShowCheckdigit
ShowText
TextAlign
Unit
Xunit
AutoCheckdigit