The "Apply Date, Author and Dublin Core properties." should only be available to Administrators

This options makes the CSV importer use the core session importDocument API instead of the regular createDocument. This API checks that the current user is an admin and if not throws and exception with the message "Only Administrator can import"

https://github.com/nuxeo/nuxeo/blob/36f0044c42b448ce2f87141a1ff83b5fd8d9ee57/nuxeo-core/nuxeo-core/src/main/java/org/nuxeo/ecm/core/api/AbstractSession.java#L753

This message is really not end user friendly and I had to look at the source to understand the meaning.