BAPI_PO_CREATE1

Hi:

We are using a customed program to create Service PO's with reference to a value contract using BAPI_PO_CREATE1...

This worked fine until last month when we loaded new support pack (SAP ECC6).

Now it gives us an "error message - Please enter quantity in line...." although we are working with Value contracts...

When I create this manually through ME21N, it goes through fine without any error messages....

Is there anyone who can assist in resolving this matter please....

Thanks.

W.