The Details tab
Once on the "Details" screen, the entities highlighted in red have failed to upload. The lines in grey were successful. Failures occur per entity. For Web Sales Orders, failures occur per Sales Order Number.
Click the "Display Error Message Column" to show why a particular entity failed. This will add an additional column called "Error". Only the first error message is shown per entity. The "Display Errors Only" checkbox filter results to only show failed entities.
To download the results as a CSV, click the "Download as CSV" button
The "CSV File" tab
Click the CSV file tab
The CSV file tab will show the data uploaded in CSV format