https://sapintegrationhub.com/integration-architecture/electronic-bank-statement-integration-sap-s4-hana/

WHEN 'SELECT_ALL'. alv_grid_1->get_filtered_entries( IMPORTING et_filtered_entries = lt_filtered_entries ). *        alv_grid_1->get_filter_criteria( IMPORTING et_filter = lt_filter ). lv_index = 0. LOOP AT gt_detail ASSIGNING FIELD-SYMBOL(<fs_detail>). lv_index = lv_index + 1. READ TABLE lt_filtered_entries INTO DATA(ls_filtered_entrie) WITH KEY table_line = lv_index. IF sy-subrc <> 0. <fs_detail>-chk_box = 'X'. ENDIF. ENDLOOP.