Automatic Server Session Termination (ASST) 

The Internet protocol HTTP is connectionless. However typical business applications provide information about the user session.

The Enterprise Portal session management controls the session state in an application with the SAP Internet Session Protocol (SISP). It avoids locks and also releases objects when the user leaves an application, closes the browser or logs off from the computer. This functionality uses the SISP that has been introduced with Workplace 2.10 and 2.11.