If the setting Allow users to edit the NFS Amount is enabled, you will be able to edit the amount of the NSF fee before you apply it. This could be useful if you want to void the payment but for any reason it's not necessary to apply any fee. If this is the case, type 0. The system will not generate an invoice in this case and the payment will be marked as NSF and the invoices reopened as well as the credits associated to the payment.
NSF Indicator
The system allows to quickly identify the invoices generated for NSF processes. An indicator will appear next to the order # from the Open Invoices and Receive Payment windows.
Since the same invoice could be associated to several NSFs, a popup message will appear with the corresponding details if this is the case.