Problem with a BAPI collecting dunning levels

Question

Hello all experts,
I am having a problem with BAPI “DebtorCreditAccount” (called from a VB program), collecting dunning levels.
The BAPIs is called like follows (only the essential code is shown):
The first function (GetCustomerCurrentBalance) works fine but the second (GetCustomerHighestDunningLevel) doesn’t work.
    Public Function GetCustomerCurrentBalance(ByVal strCustomerID As String) As Decimal
        Dim objARAccount, objReturn, objActualBalance As Object
        Try
            objARAccount = Me.p_sapBapi.GetSAPObject("ARAccount", "1000", Me.ConvertCustomerID(strCustomerID))
            objARAccount.GetCurrentBalance(Return:=objReturn, ActualBalance:=objActualBalance)
            Return CType(objActualBalance.Value("TOTAL_BAL"), Decimal)
        Catch ex As Exception
            Return 0
        Finally
            objARAccount = Nothing : objReturn = Nothing : objActualBalance = Nothing
        End Try
    End Function
    Public Function GetCustomerHighestDunningLevel(ByVal strCustomerID As String) As Integer
        Dim objDebtorCreditAccount, objReturn, objHighestDunningLevelD As Object
        Dim objTEST1 As Object
        Try
            objDebtorCreditAccount = Me.p_sapBapi.GetSAPObject("DebtorCreditAccount", Me.ConvertCustomerID(strCustomerID), "0001")
            objDebtorCreditAccount.GetHighestDunningLevel(Return:=objReturn, HighestDunningLevelD:=objHighestDunningLevelD)
            Return CType(objHighestDunningLevelD.Value("DUNN_LEVEL"), Integer)
        Catch ex As Exception
            Return 0
        Finally
            objDebtorCreditAccount = Nothing : objReturn = Nothing : objHighestDunningLevelD = Nothing
        End Try
    End Function
The error message I get is:
Message: The runtime object of type DebtorCreditAccount with the persistent key 00000480060001 could not be created in the Business Object Repository.
Message-Nr: 826
Workarea: OL
R/3 error message: Object does not exist
Please give me some input on how to proceed!
Best Regards,
Niklas

Answer 1

Thanks Vijaya for your fast reply. The parameters that I am giving as input are however correct.
I have investigated the problem a bit further and tried some other calls.
If I just chose to create an object of the type “DebtorCreditAccount” (without submitting any parameters) and then use the same method call as before (se code in topic above) I get the following error: “Mandatory parameter HIGHESTDUNNINGLEVELA missing.” This must mean that it knows that something is missing.
objDebtorCreditAccount = Me.p_sapBapi.GetSAPObject("DebtorCreditAccount")
objDebtorCreditAccount.GetHighestDunningLevel(Return:=objReturn, HighestDunningLevelD:=objHighestDunningLevelD) 
If if add the mandatory parameter “HIGHESTDUNNINGLEVELA” I get the error message "The persistent key for an business object instance of type DebtorCreditAccount has not been set. Cannot invoke method GETHIGHESTDUNNINGLEVEL”. This I interpret as the object has not been right instantiated. This brings me back to square one.
objDebtorCreditAccount = Me.p_sapBapi.GetSAPObject("DebtorCreditAccount")
objDebtorCreditAccount.GetHighestDunningLevel(HIGHESTDUNNINGLEVELA:="0", Return:=objReturn, HighestDunningLevelD:=objHighestDunningLevelD)
Grateful for a response!
Regards,
Niklas