::Hi Karen,
Have you checked your Avalara AvaTax Configuration? There is a setting for “Return Address”. Here is a link to our Knowledge Center with the information below as well as other configuration settings: https://knowledge.avalara.com/bundle/fwc1661758915821_fwc1661758915821/page/qfl1669141494946.html
If you still have questions or are not getting the desired result, please contact our support team.
Return Address – Select the address you want to use for return orders and credit memos.
Shipping: Use the ship-to address.
Customer: Use the sell-to address.
Invoicing: Use the bill-to address.