Like one of the above posters mentioned, you need to capture the changed data from ALV screen back to internal table.
Use this
DATA: g_alv_grid_ref TYPE REF TO cl_gui_alv_grid.
....
g_alv_grid_ref->check_changed_data( ).
Like one of the above posters mentioned, you need to capture the changed data from ALV screen back to internal table.
Use this
DATA: g_alv_grid_ref TYPE REF TO cl_gui_alv_grid.
....
g_alv_grid_ref->check_changed_data( ).