You can make a correction to an order after you have posted a prepayment invoice for the order. Additionally, you can perform the following tasks:
Issue additional prepayment invoices for the order, where the difference between the prepayment amounts that are invoiced to date and the new prepayment amount is invoiced. This result can occur if you have performed one of the following actions:
Increased the prepayment amount on one or more lines.
Added new lines to an order after issuing a prepayment.
Issue a prepayment credit memo when you:
Decrease the prepayment amount on one or more lines.
Delete lines from an order after issuing a prepayment.
Watch the following video which demonstrates how to correct or edit a prepayment.