If you want to see all the outstanding invoices on a project, you can accomplish that by using filters in the Invoices screen:
- Filter the screen by project and select the project whose outstanding invoices you want to check. Check the Core Help for details on applying filters in the Invoices screen.
- Now, add the filter Open and select Yes for it.
- Click on Apply Filter. Core displays all outstanding invoices for the project in the filtered view.