Entering a Payables Invoice without PO Receipt

I would appreciate knowing how to enter an invoice against a Purchase Order where the Invoice Match Option is Receipt and a Receipt has not been entered yet. We want to be able to do this to account for the invoice until the Receipt is entered. In the AP Workbench the message says "Query caused no records to be retrieved" which prevents us from creating distributions and therefore accounting for an unmatched invoice.

Thanks.

Jason Kemp