Creating & posting the incoming invoice (MIRO) using BAPI

Question

Hi,
We used to give ,
Document Date = current date
Delivery Note    = EX1
Select the vendor
Once we select the vendor the following data gets populated automatically such as,
Item,Amount,Quantity,UOM and so on.
For my data I get tax_code as V5.
When I select the check box CALCULATE_TAX tax amount gets populated as 120 and Balance Amount as 3120.
PO No         Amount Quantity UOM INVOICESIGN
4600003648 2000       200       PCS  +
4500000208 1000       100       PCS  +
This data gets Populated automatically when I select EX1 as deleivery note and 000025 as vendor
Since invoicesign is '+' for both the rows I give
MATERIALDATA-SHKZG = 'S' for both the rows.
I am getting errors like:
1.  Balance <> 0  debit = 6120 credit = 3120.
2.  Quantity greater than amount to be debited.
and I couln't post the document.
Kindly help me in this regard .
If possible pls give me the code.

Answer 1

For vendor invoices GLaccount will have cost centre data.the first line is always of vendor when you create vendor invoice in which vendor number is passed.
In GLaccount apss your cost centre data.
Nabhheet