Activating ICF Services for the Help Center 
This activity is necessary if you want to use the Help Center for Web Dynpro ABAP applications in the portal.
For security reasons, all services of the Internet Communication Framework are inactive following installation of the SAP Web Application Server ABAP. You have to activate the required services manually.
Launch transaction SICF in the SAP system.
Make sure that the hierarchy type SERVICE is set and choose Execute.
Under Virtual Hosts/Services, open the structure .
Activate the services for Web Dynpro ABAP applications.
Note
The services are listed at the link below. To activate a service, choose Activate Service in its context menu.
More information: Active Services in SICF
Under Virtual Hosts/Services, open the structure .
Navigate to the service SAPGUIHC_APPLICATION.
In the context menu, choose Activate Service.
The system has a standard timeout that terminates the Help Center application after a defined period of inactivity. If the period of inactivity permitted by the system is insufficient, you can specify a longer period.
Open the service for the Help Center application (see above) in change mode.
On the Service Data tab page, under Session Timeout, specify the required length of time.