Customer short paid invoice-Newbie needing help

SOLVED

I am fairly new to Sage 100 and could really use some help. Several times we have had customers short pay their invoice by accident. These invoices are short paid only by a few cents, so we feel sending a statement out to our customer to show a balance of a few cents isnt worth our time. Some of these invoices are time and material invoices. How can I balance out the books to make this $0.20 go away? Thank you in advance for helping out a newbie in getting rid of a headache!