You need to manually create a credit memo in the Admin Console
- On the Transactions tab, click New
- Fill out all required fields on the Document tab:
- Origin/Destination Addresses
- Document Code
- Customer/Vendor Code
- Document Date
- Document Type
- Switch to the Lines Tab and press the button Add New Line:
- Enter a Line No
- Enter a Qty of at least 1
- Make the dollar amount negative
- Once the line is complete, click Add
- Click Calculate Tax.
- Click Save as Committed.