Change Purchase Requisition

Question

I'm trying to change the Purchase Requisition data, so, as a first test, I'm trying to invoke the change method but actually not changing a thing.
I'm getting an error '80040e21' when I call the BapiChange.
Does anybody knows what might be the problem?
The code follows below:
<%
  Dim oBAPI
  Dim objRequisitionItemsOld
  Dim objRequisitionItemsNew
  Dim objRequisitionAccountOld
  Dim objRequisitionAccountNew
  Dim objRequisitionTextOld
  Dim objRequisitionTextNew
  Dim objReturnChange
  ' get detail objects
  Dim sNum
  Dim objsRequisitionAccountAs
  Dim objReturnGetDetail
  Set objRequisitionItemsOld = Nothing
  Set objRequisitionItemsNew = Nothing
  Set objRequisitionAccountOld = Nothing
  Set objRequisitionAccountNew = Nothing
  Set objRequisitionTextOld = Nothing
  Set objRequisitionTextNew = Nothing
  Set objReturnChange = Nothing
  Set objsRequisitionAccountAs = Nothing
  Set objReturnGetDetail = Nothing
  sNum = "0000000001"
  ' Connect to business object PurchaseRequisition
  Set oBAPI  = CreateObject("SAP.PurchaseRequisition.1")
  oBAPI.Destination = "DCOM-DESTINATION"
  oBAPI.InitKeys(sNum)
  oBAPI.BapiGetDetail objRequisitionItemsOld, ,"X", , objsRequisitionAccountAs, objRequisitionTextOld, , , , objReturnGetDetail
  Set objRequisitionItemsNew = objRequisitionItemsOld
  Set objRequisitionAccountNew = objRequisitionAccountOld
  Set objRequisitionTextNew = objRequisitionTextOld
  oBapi.BapiChange objRequisitionItemsOld, objRequisitionItemsNew, objRequisitionAccountOld, objRequisitionAccountNew, objRequisitionTextOld, objRequisitionTextNew, objReturnChange
%>

Answer 1

Hi Leonardo,
I never used <whatever language this is>, but I see a difference in parameter definition of function modules BAPI_REQUISITION_GETDETAIL and BAPI_REQUISITION_CHANGE.
In FM ...getdetail table REQUISITION_ITEMS is of structure  BAPIEBAN (120 fields), in FM ...change table REQUISITION_ITEMS_OLD is of structure BAPIEBANV (34 fields).
Maybe there is an automatic conversion - maybe you have to define two different sets of variables and convert result of FM ...getdetail yourself for input in FM ...change.
Regards,
Christian