I'm using the .NET SDK in an asp.net website. I'm having problems retrieving the ebay items Tracking Number. I'm currently using the GetMyEbaySelling api call which supposedly contains a "ShippingDetails.ShipmentTrackingDetails" object but the ShipmentTrackingDetails is always empty. I also checked the returned XML in the API Test Tool and I cannot find any ShipmentTrackingDetails element. Is there any other API call I should use to get an item's Tracking Numbers. Appreciate any tips.