use proper error generation
use proper error generation

xepan/atk4,atk4/atk4,xepan/atk4,svisystem/atk4,samratcis/atk4,samratcis/atk4,xepan/atk4,atk4/atk4,svisystem/atk4,atk4/atk4,svisystem/atk4,atk4/atk4,samratcis/atk4