To Apply Partial Credit to Payment
Select the checkbox
next to the order that you want to add partial credits to.Tip
You can only add partial credit to a single order at a time.
Click Add Payment(s), the Add Payment(s) page appears.

For each order, do the following:
Select the Payment Received Date.
In the Payment Type drop-down list, select Partial Credit.
Enter the Credi
Select the Payment Received Date.
In the Payment Type drop-down list, select Partial Credit.
Enter the Credit Amount.
Enter the following information:
Payment Date
OFM Credit Date
Pay.gov Reference Number
Comments
Review the credit details, then click Apply Payments. The payment moves to the Payment History.