How to Prevent Self Approval of Receivables Credit Memos

Summary:

We would like to prevent our users from reviewing and completing their own submitted Accounts Receivable Credit Memos. Even if they are explicitly designated as an approver, we'd like the user who creates their own transactions to be restricted from approving their own accounts receivable credit memo transactions.

In this way, the application maintains proper segregation of duties, minimizes risk and promotes accountability.

Is there a way to do this for Credit Memo's only? I see that there is the ORA_AR_ALLOW_SELF_APPROVAL profile option (set as No at the Site Level), however this is not what we are looking for.