Message Oracle RMAN-06274 - Report of files that must be backed up to satisfy number days recovery window

ERRORReport of files that must be backed up to satisfy number days recovery window
CAUSEThis message is issued in response to the REPORT NEED RECOVERY WINDOW OF n DAYS command for those files that must be backed up to satisfy specified retention policy.
ACTIONTo satisfy specified recovery window for this datafile, take a new full or incremental backup now.