RMAN Backup archive log between SCN:

RMAN> backup archivelog scn between 34535421234 and 67555696397;

Starting backup at 2021/08/22 01:46:29
using channel ORA_DISK_1
specification does not match any archived log in the repository
backup cancelled because there are no files to backup
Finished backup at 2021/08/22 01:46:30

Starting Control File and SPFILE Autobackup at 2021/08/22 01:46:31
piece handle=/backup/oracle/ORACLEAGENT/rman/WWIQDW_autobcf_c-759447934-20210822-05 
comment=NONE
Finished Control File and SPFILE Autobackup at 2021/08/22 01:46:38