Our logs are getting filled with errors every time any search engines index the site:
Avalara tax provider error. InvalidAddress - The address value was incomplete.
Details: The address value ShipTo was incomplete. You must provide either a valid line + region + country + postal code.
and
Avalara tax provider - No response from the service
No errors with regular traffic. However, we just had 56,000+ of these errors in less than 24 hours, and it is ongoing.