Payables Open Interface Import Progam Error

Hi,

I am stuck at the below error while running payables open interface import program.

Validation errors for PO invoice image

<P_HOLDS_ITEM>
<HOLD_LOOKUP_CODE>NotReadyForImport</HOLD_LOOKUP_CODE>
<HOLD_REASON>Acct required: Invalid default alias name</HOLD_REASON>
</P_HOLDS_ITEM>
</P_HOLDS>

We need to identify the reason for this highlighted error. Not very sure if this Account alias needs to come from OFR xml.
On the distribution coding form, there is one option for 'Alias' lookup but no value is coming up in that lookup. But for PO invoices there is no place other than OFR from where this element can flow in.