Partial Payment Received by Customer - Credit Memo in QuickBooks

<p>We currently have a customer that is sending us partial payments on invoices as their way to dispute a charge. Most of our customers have accepted paying in full and then allowing us to add a credit to their future invoice to reconcile.</p><p>How should one handle this scenario if they are using OpenAir and QuickBooks?</p><p>Specifically, we have run billing in OpenAir, created the project billing transactions and charges, packaged those charges into an Invoice and entered that invoice amount in QuickBooks. Then, the month closes. So now we get a check from the customer that is for less than the