ShipmentReference Property
Customer-defined number (that may or may not be unique) used to identify the whole shipment.
Syntax
[VB.NET] Public ReadOnlyProperty ShipmentReference As String
[C#] public string ShipmentReference {get;}
Remarks
When the TrackShipment method is called, and if issued at the time of shipping, this reference number (if any) will be returned in server's response.
This property is read-only.
Default Value
""