Report_attribute_error_message

Hi

i can use Report_attribute_error_message but Didnt call this method.

DATA lo_nd_emp_group_travel TYPEREFTO if_wd_context_node.
  DATA lo_el_emp_group_travel TYPEREFTO if_wd_context_element.
  data lo_api_controller     typerefto if_wd_controller.
  data lo_message_manager    typerefto if_wd_message_manager.

  DATA: it_emp_gt1 TYPETABLEOF YTMS_GT_EMP_DETA,
        wa_emp_gt1 TYPE YTMS_GT_EMP_DETA.

  DATA: it_emp_gt2 TYPETABLEOF YTMS_GT_EMP_DETA,
        wa_emp_gt2 TYPE YTMS_GT_EMP_DETA.

  DATA lv_value TYPE string.

    lo_api_controller ?= wd_This->Wd_Get_Api( ).

  it_emp_gt1 = lt_emp_group_travel.
    SORT it_emp_gt1 by emp_id.
  it_emp_gt2 = it_emp_gt1.


   LOOPAT it_emp_gt1 INTO wa_emp_gt1.
    lv_value = sy-tabix.
    lv_value = lv_value + 1.
    READTABLE it_emp_gt2 INTO wa_emp_gt2 INDEX lv_value.
    if sy-subrc = 0.

      if wa_emp_gt1-emp_id = wa_emp_gt2-emp_id.
*
        CALLMETHOD lo_api_controller->GET_MESSAGE_MANAGER
          RECEIVING
            MESSAGE_MANAGER = lo_message_manager
            .

*         report message
    CALLMETHOD lo_message_manager->report_attribute_error_message
          EXPORTING
            message_text   = 'Duplicate entries are not allowed'
            element        = lo_el_emp_group_travel
            attribute_name = 'EMP_ID'.

      CLEAR : wa_emp_gt2,wa_emp_gt1.

        ENDIF.


      endif.
    ENDLOOP.