The final step of return management in NetSuite is to close line items on the customer return authorization. To do this, you would open the return authorization form that has items that have been fully returned and refunded (Transactions > Customers > Issue Return Authorizations > List). Once you have selected the form you want, you can either close a single line item or all the line items. To close all the line items, simply select the button Closed. If you just want to close a single line item, edit the authorization form, select the line you want to close, and select the Closed box. Then save the form.