Whose responsibility is it to assign classification markings other marking caveats and warning notices to classified and controlled unclassified information hardcopy softcopy electronic files?

The responsibility to assign classification markings, caveats, and warning notices to classified and controlled unclassified information typically lies with the originating agency or individual who creates or handles the information. This ensures that the markings accurately reflect the sensitivity and handling requirements of the information. Compliance with established guidelines and regulations is crucial to maintain the integrity and security of the information. Ultimately, it is the duty of the personnel involved in the information's lifecycle to apply the appropriate markings.