Would it be possible to notify the submitter that the period is locked before it goes into approvals? I have had invoices not getting published because the invoice is old and the period is locked which results in putting the invoice back into the inbox, changing the date, and then sending it again for approval.
Additionally, if I were to have to send an invoice back for approval, it would be great if I were able to add a note / feedback about why the invoice is being sent in for approval again even when it was approved by the first/second/etc approver.