To review invoices for a customer, follow these steps:

1. First, ensure that you are in the right Business Unit or BU. Click on "BU" from the top menu to choose and select the proper business unit for the customer.

2. From the lefthand menu, select "Maintain Invoices"

3. Click on the "Customer" tab at the top center.

4. Enter a customer number and press enter.

5. Select the "Settled" tab to view invoices.

6. Invoices will appear in the window.

7. You will see additional options for printing the invoice and emailing it.