Hello StevenS, 

You'll need to change the payment type to Check and then follow these steps: 

1. Go to Customers, then select Customer Center.
2. Select the Transactions tab, then choose Received Payments.
3. Double-click the payment you want to record as NSF.
4. On the receive payments window, select the Record Bounced Check icon on the Main ribbon tab.
5. In the Manage Bounced Check window, enter the bank fee, date, expense account, and customer fees. 
6. QuickBooks will show you the Bounced Check Summary and then click Finish.

However, if you want to retain it as n e-check, you can follow Option 2 on this article: Handle Non-Sufficient Funds (NSF) or bounced check from customers.

Let me know if you have other questions. Take care and have a great day!