Devices.vscsi.disk ?

Hello,
When I assigned CDROM from IVM (VIOS) to LPAR and then running cfgmgr i get the following message on the client lpar

#cfgmgr

cfgmgr: 0514-621 WARNING: The following device packages are required for device support but are not currently installed.
devices.vscsi.disk

searching AIX 5.3 CDROM, I couldn't find devices.vscsi.disk

anyone faced similar problem ?