If a voucher has been partially paid can you write-off or cancel the remaining payment schedule?

Question:

If a voucher has been partially paid, can the remaining unpaid amount be cancelled or written off?  Example:  You have a voucher for $100, 1st Scheduled Payment was for $50 and 2nd Scheduled Payment was for $50.  If you've created a payment for the 1st Scheduled Payment and then determined you do not want to create a payment for the 2nd Scheduled Payment, can you cancel the 2nd payment or adjust the invoice?

This is for version 9.0 Financial.

Thanks.