1. Field Catalog Setting WHEN 'LIFNR2'. gs_fieldcat-edit = 'X'. gs_fieldcat-f4availabl = 'X'. WHEN 'ZADDR2'. gs_fieldcat-edit = 'X'. gs_fieldcat-f4availabl = 'X'. 2. Event receiver setting. handle_f4 FOR EVENT onf4 OF cl_gui_alv_grid IMPORTING e_fieldname es_row_no er_event_data et_bad_cells e_display, 3. Method Implementation METHOD handle_f4. PERFORM on_f4 USING e_fieldname es_row_no-row_id er..