consume WSDL error

I have this error, need help please experts

Mon Oct 24 13:06:15 CLST 2011:ERROR:Exception in request: java.net.UnknownHostException: SAPPIDES

Mon Oct 24 13:06:15 CLST 2011:ERROR:An error occured [SAPPIDES], see error log for details

Mon Oct 24 13:06:16 CLST 2011:INFO:Error getting response for [DatColabs_C_Out_SIBinding.ConsultDatColabs:Request 1]; java.net.UnknownHostException: SAPPIDES

thanks,

pablo