Can an auto approved expense be rejected?

Hi

Is it possible to reject an expense that has been automatically approved? Our customer has come across an expense that was auto approved but later found to be contrary to their offline approval guidelines.

I reviewed the Oracle Internet Expenses Implementation and Administration Guide for 11.5.10.2 and advised them of the steps on pg 276 about rejecting an expense report but have responded to say that the options described in the document are not available to their expenses auditors as the claim has been auto-approved.

I would like to know if there is a way to reverse the approval and send it back to the requester with notes to get them to amend it?