If you see the following message :
“The file you're trying to upload is not valid. Please select the correct file and try again…”.
Check the ebayExport.csv file you uploaded in Notepad for the header formatting.
The first header row should match the following columns:
PackageTrackingNumber, PackageVoidIndicator, PackageReference1,
PackageReference2, PackageReference3, PackageReference4,
PackageReference5, PackageDeclaredValueAmount,
ShipmentInformationServiceType, ShipmentInformationActualWeight,
ShipmentInformationBillableWeight,
ShipmentInformationTotalShipmentPublishedCharge,
ShipmentInformationTotalShipmentandHandlingCharges,
ShipmentInformationNumberofPackages, ShipToAddress1, ShipToAddress2,
ShipToCityorTown, ShipToPostalCode, ShipToCountryTerritory,
ShipFromCityorTown, ShipFromStateProvinceCounty, ShipFromPostalCode