best overloaded method match for 'SecurityWCFService.Securit

Question

        public void SendMail(string subject, string body, string countryval, string FilePath)

        {

            try

            {

                _secService = new SecurityWCFService.SecurityServiceClient();

                smtpConfig = _secService.GetConfigurationDetailByCountry(Guid.Parse(countryval));

The best overloaded method match for 'SecurityWCFService.SecurityServiceClient.GetConfigurationDetailByCountry(SecurityWCFService.GetConfigurationDetailByCountryRequest)' has some invalid arguments