Why am I receiving the error "An Address is Incomplete or Invalid" in AvaTax?

Overview

When calculating tax, you receive the error "An Address is incomplete or invalid"

Avalara AvaTax

This error indicates an address being sent to Avalara is partially completed, in a format that cannot be recognized, or does not have enough information to determine tax jurisdictions
- We require a minimum of State and Postal Code for US and Canadian addresses
  - However a full address (Street address, city, state, and zip code) will return the best tax calculation
- For international transactions, the two digit ISO country code is required to determine tax jurisdictions
This occurs most often with your company address (origin), so we recommend reviewing all company addresses and Location Codes associated with the transaction for complete addresses.
Review the customer address and shipping location to confirm they are complete as well
Once all addresses are reviewed and corrected, recalculate tax
- Depending on your accounting system you may need to re-select the customer to update the sale with the new address
- Usually this requires selecting a different customer, then choosing the correct one again to update the transaction