AC: Error Message: "Message from External System: System.JSONException: Unexpected character (‘<‘(code 60)): expected a valid value (number, String, array, object, ‘true’, ‘false’ or ‘null) at input location [1,2]"
A connection failure with the external tax system may occur due to an incorrect Avalara URL. This will generate a "System.JSONException" error when testing the connection. To resolve this, the Connection URL must be corrected within the External Tax Calculation Settings. The correct URL depends on whether a Production or Sandbox org is in use.