Validation on duplicate expense claim

Summary:

We have a requirement to prevent duplicate expense claims. If a user submits an expense report containing an expense with the same expense date and expense type as an existing claim, the user should not be allowed to proceed with the submission.

Alternatively, if the duplicate is identified during the approval process, either the expense report should be automatically rejected or the user should receive error stating it is an duplicate entry.

Can anyone suggest the best approach to achieve this requirement in Oracle Fusion Expenses?

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