The legacy AvaTax REST 1.0 API documentation is available online for users who have existing implementations of AvaTax built using REST 1.0. New integrations should use the full AvaTax REST 2.0 API, which fully replaces REST 1.0.
DEPRECATED
This API is replaced by ResolveAddress API.
Documentation for this API is available for reference for customers who have existing integrations that were built with REST 1.0.
Normalizes a single US or Canadian address, providing a non-ambiguous USPS address match. To recieve an XML response, use the URL /1.0/address/validate.xml
and set the request header Content-Type: text/xml