When Glean receives an invoice, part of our review process is to ensure that there are no duplicated invoices. If the invoice amount, date, and number are all the same, we will automatically mark the invoice as a duplicate and you will see an error message like the below:

That being said, if 2 of these 3 are the same, you will receive an alert stating that the invoice could be a potential duplicate.

If you click on this alert, you will be sent to a screen where we will put this invoice up next to the invoice we believe may be a duplicate. On this screen you will be able to review both invoices to determine if they are actually a duplicate of one another.