When following documentation "Managing denied items and allowed items from the central list" to import CSV hash file for the Deny List and Allow List after clicking on Import the console returns error message that the "File is invalid. Please provide valid file." You are sure that the file created and to be uploaded is in correct format and should not result in error.
Production Endpoint Security Cloud Console
Unknown
Symantec is currently investigating this issue. This article will be updated when solution is available.
Error screenshot as seen in the console: