Cannot connect to server PureDisk

Hello all,

Information of Infrastructure Netbackup:

Appliance 5230 8.1.1

Master Server 8.1.2

I'm trying to delete some Orphan Images i've located with the script PoGather and script of mine.

The command line is on the Master Server on Powershell:

./bpstsinfo.exe -deleteimage -storage_server <Name Appliance> -stype PureDisk -lsuname PureDiskVolume -imagedate <> -imagename <server_Date_C1_F6_R1> 

Result : Cannot connect to server PureDisk:<Appliance>

Exit Status = 25

If i execute this command line on the Appliance i have the error : 

sts_delete_image failed (no more entries), but this image get by the PoGather Script ?

Have you an idea of this ?

Thx For Help.