I try to duplicate database by rman

Hello gurus,

I try to duplicate database from a backup

spool log to '/home/orahrpd9/log/dupHRPRD9DUP9.log';
RMAN> run {
allocate auxiliary channel CH1 type 'SBT_TAPE'
parms='ENV=(NB_ORA_CLIENT=sbrxxx.intranet.cnim.net,NB_ORA_SERV=sbryyyy)';
set until time "to_date('14/09/2015 16:30:00','DD/MM/YYYY HH24:MI:SS')";
duplicate database BASE9 DBID=2064882952 to BASEDUP9;
release channel CH1;
}

then

At the en of dupplicate database i have this next error :

ORA-19870: error while restoring backup piece arch_dHRPRD9_ufmqh5mfu_s4598_p1_t890427902

ORA-19501: read error on file "arch_dHRPRD9_ufmqh5mfu_s4598_p1_t890427902", block number 15361 (block size=512)