Now you have completed your ExternalWindowsUserServices reusable part, it's time to test it.
Create a server module called TestWindowsUserServicesModule and add the following code to the server module:

• Fields
  Define Field(#Fld_Domain) Type(*NVARCHAR) Length(200)
  Define Field(#Fld_UserName) Type(*NVARCHAR) Length(200)
  Define Field(#Fld_Password) Type(*NVARCHAR) Length(1000)
• Server routine
  Srvroutine Name(TestAuthenticateUser)
     Field_Map For(*INPUT) Field(#Fld_Domain) Parameter_Name(Domain)
     Field_Map For(*INPUT) Field(#Fld_UserName) Parameter_Name(UserName)
     Field_Map For(*INPUT) Field(#Fld_Password) Parameter_Name(Password)
     Field_Map For(*OUTPUT) Field(#Fld_Message) Parameter_Name(Message)
     * Create an instance of the ExternalWindowsUserServices reusable part
     Define_Com Class(#ExternalWindowsUserServices) Name(#Services)
     * Create an instance of the invocation status object
     Define_Com Class(#ExternalServiceInvocationStatus) Name(#Status)
     * Invoke the 'Authenticate' method
     #Services.Authenticate Domain(#Fld_Domain) Username(#Fld_UserName) Password(#Fld_Password) Invocationstatus(#Status)
     * If not OK, get the error message
     If (*Not #Status.OK)
        #Fld_Message := #Status.ErrorMessage
     Endif
  Endroutine
  Create a webpage to invoke your server module:
  Evtroutine Handling(#Com_owner.Initialize)
     Define_Com Class(#TestWindowsUserServicesModule.TestAuthenticateUser) Name(#Authenticate)
     Define_Com Class(#PRIM_DC.UnicodeString) Name(#Message)
     * Invoke the copy service via the server routine
     * Adjust the source & target file paths
     #Authenticate.Execute Domain('MyDomain') UserName('MyUserName') Password('MyPassword') Message(#Message)
     * Check if the server routine returns any error message
     If (#Message.CurChars > 0)
        #SYS_WEB.Alert( #Message )
     Else
        #SYS_WEB.Alert( 'All good!' )
     Endif
  Endroutine
  Next: Configuring Your Service to Use HTTP