AP Invoice business events filter expression

Summary

AP Invoice business events filter expression

Content

Hi,

We are trying to filter out ap invoices using the below filter expression while using receive business events option in OIC flow with ERP Adapter as trigger point and payables invoice created event : 

<xpathExpr xmlns:ns2="http://xmlns.oracle.com/apps/financials/payables/invoices/quickInvoices/invoiceInterfaceService/types/&quot; xmlns:ns1="http://xmlns.oracle.com/apps/financials/payables/invoices/quickInvoices/invoiceInterfaceService/&quot; xmlns:ns0="http://xmlns.oracle.com/adf/svc/types/">$eventPayload/ns2:result/ns0:Value/ns1:InvoiceNumber='Test1'</xpathExpr&gt;

But got the error saying - Oracle ERP Cloud Adapter has encountered an error parsing event filter expression for Ap_Invoice_Created.Please verify the event filter expression.