1. In the navigation panel, click on Sales then click Invoices

  2. On the left hand side of the screen is a list of all of your Sale Invoices
  3. When searching for a Sale Invoices use the transaction number search field to be precise.
  4. Left click into that field and start typing in the beginning of that transaction number.
  5. Click on the sale invoice that you wish to reverse
  6. View the information to ensure that is the invoice you want to reverse
  7. Click on the reverse button from the top panel

  8. Pop-up message box will appear for you to fill in the date

  9. It will give you an option to print the reversal, there is also a "Show Reversal" button which will show you the reversal screen of the shipment.