Area Binding 

This property determines the visibility and lifetime of the area instance versions of the instance by specifying a context. Possible contexts are:

·        Application Server

Area instance versions exist until the application server is shut down.

·        Session

Area instances exist until the current user’s last external session ends.

·        External Session

Area instances exist as long as the current external session.

·        ABAP Memory

Area instances exist as long as the data in the ABAP memory of the current call sequence.