rman backup format location not working

Hello,

I have the following rman script where I set a format location to direct the output to a particular folder, but majority of the files end up in a different folder.

RUN

{

configure controlfile autobackup on;

CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED ON ALL STANDBY;

ALLOCATE CHANNEL c1 DEVICE TYPE disk;

ALLOCATE CHANNEL c2 DEVICE TYPE disk;

ALLOCATE CHANNEL c3 DEVICE TYPE disk;

ALLOCATE CHANNEL c4 DEVICE TYPE disk;

ALLOCATE CHANNEL c5 DEVICE TYPE disk;

DELETE obsolete;

DELETE NOPROMPT backup completed before 'SYSDATE-2';

backup spfile format '/Archives/fast_recovery_area/WS/backup/%d_%T_%s_%p_spfile';