by using sy-lsind = 0.

no it is not possible to use set screen. if want to go back 
from any list number may be nth list then we can use at
user-command event.using this event we can create our own
function keys so where we we want to go back without using
back button and esc there we can use our own function keys.

By using sy-lsind = 0 we can return to the basic list. 
Actually the basic list has lsind field set as 0 and all 
other detail list may have index starting from 1 to 20. As 
we may have 20 detailed list for one basic list.