AN invoice &1: header-level invoices are not allowed in Customizing

What causes this issue?

The Ariba Network invoice is a header-level invoice
(isHeaderInvoice='yes') that has no invoice items. These invoices can
only be parked and revised manually. However, parking of invoices has
not been activated.

System Response

The system cannot process the invoice.

How to fix this error?

You can activate parking of invoices in Customizing for SAP Business
Suite Integration Component for Ariba under <ZK>Application-Specific
Settings -> SAP ERP Integration Component for Ariba -> Define
SAP-ERP-Specific Mapping Settings -> Define Mapping Settings for
Invoices -> Incoming Invoice: Enter Control Parameters for Log. Invoice
Verification</>. Here, you have to set the processing indicator to
<ZK>Park Invoice</>.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.