Do this:
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY' EXPORTING i_callback_top_of_page = 'TOP-OF-PAGE' i_grid_title = 'Title goes here' i_callback_program = program i_grid_settings = grid_setting i_callback_user_command = 'DOUBLE_CLICK_ON_ALV' is_layout = alv_layout it_fieldcat = i_fieldcat_alv TABLES t_outtab = itab. FORM double_click_on_ALV USING r_ucomm LIKE sy-ucomm rs_selfield TYPE slis_selfield. READ TABLE itab INDEX rs_selfield-tabindex. " now you can do what ever you like " with the above read statement you have the exact line " that the user selected. " from here you can call FB03 or perform any other funciton ENDFORM.
