If you receive an import failure notification with the below error message, follow the troubleshooting steps in this article. 

Error message: Error retrieving data from page

The data is either incomplete or cannot be accessed due to a server connection.

1. Verify the file exists in the location specified, and that it is completely loaded with field values
2. Verify the date that the issue began in the error logs (Import > History), and check for any changes that occurred that date.