Detect Duplicate expenses to Approver of expense report

Summary:

We have a requirement to flag potential duplicate expenses to Approver of expense report, when the user selects Keep these expenses and proceeds further. Currently, we can flag these reports to auditor using the Audit Duplicate Expenses rule. However, the system does not flag these duplicate expenses to approver.

Is there a way to flag these expenses to approver for review, if they are identified as potential duplicate by system.

Content (required):

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):