Change sales order using BAPI_SALESORDER_CHANGE

Question

Hi i want to add a new line item to the existing sales order using BAPI_SALESORDER_CHANGE
but when i am trying it is giving
'Schedule line 0001 for item 000020 does not exist ' error..
please help me..

Answer 1

*********I wanted to add an new line item.***.. this is my code..********
LOOP AT gt_input3 INTO st_input3.
*Finding Max No of line Items
    IF fl_set IS INITIAL.
      READ TABLE gt_vbap INTO st_vbap WITH KEY vbeln = st_input3-vbeln.
      IF sy-subrc EQ 0.
        lv_posnr = st_vbap-posnr.
        fl_set = 'X'.
      ENDIF.
    ENDIF.
*Populate Item details
    lv_posnr = lv_posnr + 10.
    lv_vbeln = st_input3-vbeln.
    lv_order_header_inx-updateflag = 'U'.
    st_order_item_in-itm_number = lv_posnr.
    st_order_item_in-material  = st_input3-matnr.
    st_order_item_in-target_qty = st_input3-imv_qty.
    st_order_item_in-plant = st_input3-werks.
    st_order_item_in-store_loc = st_input3-lgort.
   st_order_item_in-store_loc = st_input3-lgort.
    APPEND st_order_item_in TO lt_order_item_in.
*Populate item updation Details
    st_order_item_inx-itm_number = lv_posnr.
    st_order_item_inx-updateflag = 'U'.
    st_order_item_inx-material = 'X'.
    st_order_item_inx-plant = 'X'.
    st_order_item_inx-store_loc = 'X'.
    st_order_item_inx-target_qty = 'X'.
    APPEND st_order_item_inx TO lt_order_item_inx.
*Populate the Schedule Lines
    st_schedule_lines-itm_number = lv_posnr.
    st_schedule_lines-sched_line = '0001'.
    st_schedule_lines-req_qty = st_input3-imv_qty.
    APPEND st_schedule_lines TO lt_schedule_lines.
*Populate the update details of schedule lines
    st_schedule_linesx-itm_number = lv_posnr.
    st_schedule_linesx-sched_line = '0001'.
    st_schedule_linesx-req_qty = 'X'.
    st_schedule_linesx-updateflag = 'U'.
    APPEND st_schedule_linesx TO lt_schedule_linesx.
       AT END OF vbeln.
*Call BAPI Sales order change
      CALL FUNCTION 'BAPI_SALESORDER_CHANGE'
        EXPORTING
          salesdocument    = lv_vbeln
          order_header_inx = lv_order_header_inx
        TABLES
          return           = lt_return
          order_item_in    = lt_order_item_in
          order_item_inx   = lt_order_item_inx
          schedule_lines   = lt_schedule_lines
          schedule_linesx  = lt_schedule_linesx.
*Save Sales Order
      CALL FUNCTION 'BAPI_TRANSACTION_COMMIT'
        EXPORTING
          wait = 'X'.
      CLEAR lv_posnr.
      READ  TABLE lt_return INTO st_return WITH KEY type = 'E'.
      st_ipfile_err3-message = st_return-message.
*Error Log
      LOOP AT gt_temp3 INTO st_temp3.
        IF st_ipfile_err3-message IS NOT INITIAL.
          MOVE st_temp3-record TO st_ipfile_err3-record.
          IF fl_set1 IS INITIAL.
            APPEND st_temp_err TO gt_ipfile_err3.
            fl_set1 = 'X'.
          ENDIF.
          APPEND st_ipfile_err3 TO gt_ipfile_err3.
        ELSE.
          APPEND st_temp3 TO gt_audit3.
        ENDIF.
        CLEAR : st_temp3,
                st_temp_err,
                st_ipfile_err3,
                fl_set.
      ENDLOOP.
      REFRESH : gt_zrman,