about web.config error of wcf webservcie

Server Error in '/FINANCE' Application.
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Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level.  This error can be caused by a virtual directory not being configured as an application in IIS.

Source Error:


Line 55:       </endpointBehaviors>
Line 56:     </behaviors>
Line 57:     <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
Line 58:   </system.serviceModel>
Line 59:  <system.webServer>


Source File: D:\usb\saba final pjct\test\test\test\web.config    Line: 57

<configuration>
  <connectionstrings>
    
    <add name="bcountsdb" connectionstring="Data Source=123-PC;Initial Catalog=bcounts;Integrated Security=True" providername="System.Data.SqlClient" />
  </connectionstrings>
  <system.web>
    <compilation debug="true" targetframework="4.0" />
  </system.web>
  <system.servicemodel>
    <bindings>
      <wshttpbinding>
        <binding name="CustomAuthentication">
          <security mode="Message">
            <message clientcredentialtype="UserName" />
          </security>
        </binding>
      </wshttpbinding>
    </bindings>
    <services>
      <service name="test.ipadservice" behaviorconfiguration="servicebehavior">
        <endpoint address="" binding="webHttpBinding" contract="test.Iipadservice" behaviorconfiguration="web">
        </endpoint>
        <endpoint address="mex" binding="mexHttpBinding">
       contract="IMetadataExchange" />
        <host>
          <baseAddresses>
            <add baseaddress="http://localhost/" />
          </baseAddresses>
        </host>
      </endpoint></service>
    </services>
    <behaviors>
      <servicebehaviors>
        <behavior name="servicebehavior">
          <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
          <servicemetadata httpgetenabled="true" />
          <!-- To receive exception details in faults for debugging purposes, set the value below to true.  Set to false before deployment to avoid disclosing exception information -->
          <servicedebug includeexceptiondetailinfaults="true" />
          <servicecredentials>
            <!--   <servicecertificate findvalue="MyWebSite">
                     storeLocation="LocalMachine"
                     storeName="My"
                     x509FindType="FindBySubjectName" />-->
            <usernameauthentication usernamepasswordvalidationmode="Custom" customusernamepasswordvalidatortype="test.usernamepassvalidator,test" />
          </servicecertificate></servicecredentials>
        </behavior>
      </servicebehaviors>
      <endpointbehaviors>
        <behavior name="web">
          <webhttp automaticformatselectionenabled="false">
         defaultBodyStyle="Wrapped" defaultOutgoingResponseFormat="Json"
         helpEnabled="true" />
        </webhttp></behavior>
      </endpointbehaviors>
    </behaviors>
    <servicehostingenvironment multiplesitebindingsenabled="true" />
  </system.servicemodel>
 <system.webserver>
    <modules runallmanagedmodulesforallrequests="true" />
  </system.webserver>
  
</configuration>