Update invoice interface table webservice giving error

Summary

Update invoice interface table webservice giving error

Content

I am trying to update payables invoice interface table record using following webservice through SOAP UI. 

https://xxxx-xxxx.fa.us6.oraclecloud.com:443/fscmService/InvoiceInterfaceService

payload:

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/&quot; xmlns:typ="http://xmlns.oracle.com/apps/financials/payables/invoices/quickInvoices/invoiceInterfaceService/types/&quot; xmlns:inv="http://xmlns.oracle.com/apps/financials/payables/invoices/quickInvoices/invoiceInterfaceService/"&gt;
   <soapenv:Header/>
   <soapenv:Body>
      <typ:updateInvoiceInterface>
         <typ:invoiceInterfaceHeader>
            <inv:InvoiceId>300000003973789</inv:InvoiceId>
            <inv:Description>Hemen Test Message</inv:Description>
            <inv:OrgId>300000001692356</inv:OrgId>
            <inv:Source>B2B XML INVOICE</inv:Source>