Is it possible to enforce 1 Expense report per Receipt Number?

Summary:

Expenses must be forced to be associated with one receipt number only. Expense numbers must contain one single unique receipt number.

Content (please ensure you mask any confidential information):

Greetings

We've identified Duplicated expenses using the same Receipt Number. Users can create expenses using the same Receipt number with no warning or error displayed at all. The expected behavior for this is that users can't create two expenses using same Receipt Number.

We found a note that this is no longer setup by implementation user it's automatically set for duplicated expenses found

Would you please help us?

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