RMAN-06172: no AUTOBACKUP found

Hi all,

A few weeks ago, I have created my own copy of backup and controlfile. After some time, I want to restore to this old backup. When I am trying to restore controlfile, got RMAN-06172: no AUTOBACKUP found .

1. Please advise.
2. also, how do I get rid of it searching for autobackups? I already supplied the backup file.? and did not look at my controlfile backup in the command.

. BACKUP

run {

 set controlfile autobackup format for device type disk to '/u02/xxx/%d_%F.bkp';

 allocate channel c1 device type disk format '/u02/xxx/%d_all_%T_%U.bkp';