You can mark that an invoice has been paid or partially paid by using the Payments panel in the invoice.
How to mark an invoice as fully paid?
To mark an invoice as paid, you have 2 options:
You click on 'Add a payment' in the Payments panel. LSP.expert will automatically fill in the fields and ask if you would like to mark the invoice as Paid. Click on Add and your invoice will be marked as Paid.
Simply change the status of the invoice to Paid and LSP.expert will automatically add a payment entry in the Payments panel (using today's date).
How to mark an invoice as partially paid?
Let's say you received an upfront payment for an invoice, representing 50% of the amount. You can also record this in the Payments panel.
Click on 'Add a payment' and enter the amount. LSP.expert will automatically unselect the option to mark the invoice as Paid.
Click on Add and the invoice will be marked as Partially paid.
When you receive the final payment for the invoice (or any other intermediaite payment), just add another payment entry in the Payments panel.