Update Delivery Qty of Inbound Delivery using BAPI_INB_DELIVERY_CHANGE

Question

Hi Experts,
I'm trying to use  BAPI_INB_DELIVERY_CHANGE to update the delivery quantity of a line item in an Inbound Delivery. However, I keep on getting this error:
Type: E
ID: VLBAPI
Number: 004
Text: Error in document &1 item &2 (quantity consistency check)
Below is my test program. Any input will be much appreciated.
REPORT  ztest.
DATA: deadlines LIKE bapidlvdeadln OCCURS 0.
DATA: wa_deadlines LIKE bapidlvdeadln.
DATA: header_data_t LIKE bapiibdlvhdrchg OCCURS 0.
DATA: wa_header_data LIKE bapiibdlvhdrchg.
DATA: header_control_t LIKE bapiibdlvhdrctrlchg OCCURS 0.
DATA: wa_header_control LIKE bapiibdlvhdrctrlchg.
DATA: item_data LIKE bapiibdlvitemchg OCCURS 0.
DATA: wa_item_data LIKE bapiibdlvitemchg.
DATA: item_control LIKE bapiibdlvitemctrlchg OCCURS 0.
DATA: wa_item_control LIKE bapiibdlvitemctrlchg.
DATA: header_data_t_con LIKE bapiibdlvhdrcon OCCURS 0.
DATA: wa_header_data_con LIKE bapiibdlvhdrcon.
DATA: header_control_t_con LIKE bapiibdlvhdrctrlcon OCCURS 0.
DATA: wa_header_control_con LIKE bapiibdlvhdrctrlcon.
DATA: item_data_con LIKE bapiibdlvitemcon OCCURS 0.
DATA: wa_item_data_con LIKE bapiibdlvitemcon.
DATA: item_control_con LIKE bapiibdlvitemctrlcon OCCURS 0.
DATA: wa_item_control_con LIKE bapiibdlvitemctrlcon.
DATA: return TYPE STANDARD TABLE OF bapiret2.
CLEAR: wa_header_data, wa_header_control.
wa_header_data-deliv_numb = '0180000545'.
wa_header_data-gross_wt = '3001.000'.
*wa_header_data-NET_WEIGHT = '3001.000'.
wa_header_data-unit_of_wt = 'KG'.
wa_header_data-volume = '1500.5'.
wa_header_data-volumeunit = 'M3'.
APPEND wa_header_data TO header_data_t.
wa_header_control-deliv_numb = '0180000545'.
wa_header_control-NET_WT_FLG = 'X'.
wa_header_control-volume_flg = 'X'.
wa_header_control-gross_wt_flg = 'X'.
*wa_HEADER_CONTROL-DELIV_DATE_FLG = 'X'.
APPEND wa_header_control TO header_control_t.
CLEAR: wa_item_data.
wa_item_data-deliv_numb = '0180000545'.
wa_item_data-deliv_item = '000020'.
wa_item_data-dlv_qty = '3000'.
wa_item_data-dlv_qty_imunit = '3000'.
wa_item_data-sales_unit = 'KG'.
wa_item_data-sales_unit_iso = 'KG'.
wa_item_data-base_uom = 'KG'.
wa_item_data-base_uom_iso = 'KG'.
wa_item_data-gross_wt = '3000'.
wa_item_data-unit_of_wt = 'KG'.
wa_item_data-volume = '1500'.
wa_item_data-volumeunit = 'M3'.
APPEND wa_item_data TO item_data.
CLEAR: wa_item_control.
wa_item_control-deliv_numb = '0180000545'.
wa_item_control-deliv_item = '000020'.
wa_item_control-chg_delqty = 'X'.
wa_item_control-VOLUME_FLG = 'X'.
wa_item_control-NET_WT_FLG = 'X'.
wa_item_control-GROSS_WT_FLG = 'X'.
APPEND wa_item_control TO item_control.
CALL FUNCTION 'BAPI_INB_DELIVERY_CHANGE'
EXPORTING
header_data = wa_header_data
header_control = wa_header_control
delivery = '0180000545'
* TECHN_CONTROL =
TABLES
* HEADER_PARTNER =
* HEADER_PARTNER_ADDR =
* HEADER_DEADLINES = deadlines
item_data = item_data
item_control = item_control
* ITEM_SERIAL_NO =
* EXTENSION1 =
* EXTENSION2 =
return = return
* TOKENREFERENCE =
* HANDLING_UNIT_HEADER =
* HANDLING_UNIT_ITEM =
* PARTIAL_GR_OBJECTS =
CALL FUNCTION 'BAPI_TRANSACTION_COMMIT'.

Answer 1

Hi,
Pls try to use the other structure
ORDER_SCHEDULES_INX type BAPISCHDLX bcoz it is used to update the required field.
Now for the date field add the required days to set it as future date.
ex:
l_date = l_date + 12. // it will be set to future or requred date.
Reward if helpful.
Regards
Chandralekha