question about reimaging an unity 300f (Service Key Generator site)

Hello,

I have to reimage an unity 300f box (because port 4 on both SP doesn't want to service ISCSI request, working fine on port 5).

I have generated the procedures throw solve generator.

The procedure says in step 2:

2.  Create two bootable USB Drives from the target .tgz.bin file using the following steps:
     a)  On a working Unity system, use the svc_inject -k process to inject root access, then initiate a root session using svc_service_shell

  spb:~> svc_inject -k
     Current Challenge: 6C57C-54307-ADE7F-02F4D-4FB76-06A64
     --Copy the ‘Current Challenge’ string to the Service Key Generator site, then run the command again with the response Key
     spb:~> svc_inject -k 1D1DC-9B506-351A7-2F08B-BCB14-75DB7-AC7E3-E71B4-01
     Note:  This will inject root to the system, but you must still initiate the Root session each time you connect via SSH for that particular user Shell session

The question is what is "the service key generator site" and how to access it ?

Thank you by advance

Olivier