TRY.

         lo_tu_cntrl->create_new_bo_tu( EXPORTING is_bo_tu_new = ls_new_tu_head
                                        IMPORTING eo_bo_tu     = eo_bo_tu ).
         IF eo_bo_tu IS BOUND.
            es_tu_act_num = eo_bo_tu->get_num( ).
            APPEND es_tu_act_num TO lt_inkeys.
         ENDIF.

            lo_tu_cntrl->save( ).

*--Commit work
            COMMIT WORK AND WAIT.
            tu_num = es_tu_act_num-tu_num.
            "Log something in case of success
          CATCH /scwm/cx_sr_error INTO lo_tu_exception.
            ROLLBACK WORK.
*--Log something in case of error