A RVI Collect Task for inventory of vcenter server is in error status.
In TRC_UAM_AMVMAGENT*.log following error appears :
011219-13:01:04.5275904L|005920|000017c4|amVMAgent |amVMAgent |000000|ERROR | vmRegister::RegisterComputer No host name
011219-13:01:04.5297758L|005920|000017c4|amVMAgent |amVMAgent |000000|NOTIFY | vmRegister::RunAgent Failed to register computer