Installing ICSS requires ifor_ls to be installed.
When installing the ifor_ls.client fileset, I got
these messages

Synchronizing ifor V2 and V3 configuration directory
sysck: 3001-036 WARNING:  File 
        /usr/lib/libi4shrshl.a
        is also owned by fileset bos.rte.ifor_ls.
sysck: 3001-036 WARNING:  File 
        /usr/opt/ifor/ls/dll/libi4shrshl.a
        is also owned by fileset bos.rte.ifor_ls.
sysck: 3001-036 WARNING:  File 
        /usr/opt/ifor/ls/os/aix/dll/libi4shrshl.a
        is also owned by fileset bos.rte.ifor_ls.
sysck: 3001-036 WARNING:  File 
        /usr/opt/ifor/ls/os/aix/dll/libi4shrcon.a
        is also owned by fileset bos.rte.ifor_ls.
Synchronizing ifor V2 and V3 configuration directory


        ATTENTION :

 
        /usr/opt/ifor/ls/conf/i4cfg should be run after this

        install to setup your networking environment so that 

        SystemView License Use Management will function properly.

I don't know what they all mean.