Legacy REST API
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.
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.
