BAPI_SALESORDER_CHANGE: Error-Item not found

Question

Hi,
I am calling BAPI_SLESORDER_CHANGE from an enhancement in the include MV45AF0B_BELEG_SICHERN. This will be called after the commit work of sales order. Im using this BAPI for the purpose of changing/updating the Inquiry line item from which the SO is created.
When I execute the BAPI in SE37 by passing the Inquiry no. & item to be updated, it is not giving any error. In my enhancement, I am passing the same values but getting the error: ITEM NOT FOUND.
When I debugged the BAPI, the error is raised in the Fm SD_SALES_ITEM_READ.
In the below code in FM, VBAP is getting filled inside the PERFORM VBAP_BEARBEITEN_VORBEREITEN but when it comes out of this subroutine, the VBAP is initial.
But when executing with SE37, this VBAP value is not getting cleared after the subroutine.
  PERFORM XVBAP_LESEN_DIREKT_SVBAP(SAPFV45P) USING ITEM_NUMBER.
  PERFORM VBAP_BEARBEITEN_VORBEREITEN(SAPFV45P).
  EVBAP = VBAP.
Please help me out to resolve this issue.

Answer 1

Yes,
but in sales order creation you are going thru a different code:
* Anlegen <= Here from sales order creation
  IF SVBAP-TABIX = 0.
    CLEAR:  MAEPV,
            MAAPV,
            MTCOM,
            XVBUP,
            XVBAPF,
            KONDD,
            XVBAP.
     *VBAP = XVBAP.                    " Getuntes clear
    HVBAP = XVBAP.                     " Getuntes clear
     *HVBAP = XVBAP.                   " Getuntes clear
    VBAP = XVBAP.                      " Getuntes clear
     *MTCOM = MTCOM.                   " Getuntes clear
    MOVE-CORRESPONDING XVBAP TO VBAPD. " Getuntes clear
     *VBAPD = VBAPD.                   " Getuntes clear
    CLEAR: HVBKD, *HVBKD.
* Steuerflag für Textverarbeitung initialisieren
    CLEAR NO_TEXT_COPY-ITEM.
    clear no_text_copy-check.
  ELSE.
* Ändern <= Here from SE37
    VBAP = XVBAP.
It's a completely different behaviour!
Regards,
Klaus