WSDL error for the BAPI_PO_CREATE1

Question

Hi,
  I am creating a WSDL link for the bapi to create purchase orders:
If I use a Document style, I get to enter all fields like POHEADER, POHEADERX, POACCOUNT, POITEM etc, but when I click the send I get an Internal server Error 500; and the ST22 trace gives me a report saying
Error analysis
    You attempted to access an unassigned field symbol
    (data segment 32780).
    This error may occur if
    - You address a typed field symbol before it has been set with
      ASSIGN
    - You address a field symbol that pointed to the line of an
      internal table that was deleted
    - You address a field symbol that was previously reset using
      UNASSIGN or that pointed to a local field that no
      longer exists
    - You address a global function interface, although the
      respective function module is not active - that is, is
      not in the list of active calls. The list of active calls
      can be taken from this short dump.
I then tried using the RPC style of WSDL...... here i only get to enter the POHEADER, POHEADERX, POACCOUNT fields but the POITEM field is not displayed so I cannot enter poitem data. and the response I receieve from the system is " PLEASE ENTER THE ITEMS FIRST. Purchase order not created".
How can I resolve this? Is there some way to makes more fields visible in RPC style WSD?

Answer 1

I found that there is a skip field in the document style which if not checked generates the above error.
Arpita