Error 21920410: The selected shipping service is not supported with the selected shipping package type.

The supplied ShippingPackageDetails.ShippingPackage type value must be compatible with the specified domestic and international shipping service options set through the ShippingServiceOptions.ShippingService and InternationalShippingServiceOption.ShippingService fields. Use the GeteBayDetails call and include ShippingServiceDetails as a value in a DetailName field to see which package types each domestic and international shipping service option supports. A separate ShippingPackage field is returned for each shipping package that a shipping service option supports.