Hi Fernando,
The way to use OutSystems Authentication and permission areas without using integrated authentication is:
Regards,
Nuno Teles
In fact OutSystems Web-Service does not expose the SOAP Headers in the WSDL but, if you can send them in the web-service request they can be read using the EnhancedWebReferences extension (available in the TechCenter), as Nuno wrote.
Are you able to change the web-service client to send the necessary SOAP Headers?
Best regards,
João Portela