2.7.2 You Entered an Existing File Name
The error "You entered an existing file name. Please go back and choose a different file name." will appear if the name of the file uploaded in the File Upload form is the same as one that is already associated with another contribution. One of the constraints on contributions made to the EarthRef Digital Archive is that each file name must have a unique title. Simply click the Back button, change the name of your original file, and re-upload.