Is there a GDF to un-audit an expense report?

Oracle Internet Expenses

R12.1.3

Hello,

Our audit team have incorrectly completed the audit on an expense report.  The current status of the expense report is Ready for Payment but we do not want to import it into AP; instead, we would like to have the status changed back to Pending Payables Approval so that it can be rejected and sent back to the claimant for the necessary changes.

We know that this is not possible from the front end.  Is there perhaps an expenses GDF which would change the status back? 

We appreciate this is a long shot but thank you in advance,