the specified file already exists Explanation: An attempt was made to create a file but the specified already exists. User Action: If this error is returned while attempting to perform an RMU Backup operation using the Librarian qualifier, then it indicates that the backup filename given in the command line already exists in the media manager's storage system. Either provide a new unique backup filename or use the Replace keyword with the Librarian qualifier to instruct the media manager to replace the existing backup file with a new one.