The Avalara AvaTax release schedule includes a preview period. During this time, the latest software is available for integration testing in the AvaTax Sandbox Environment two weeks before launching to production. If your engineering team would like a sandbox account for integration testing purposes:

Development and Solutions Partners (DSP), contact your business development manager
Avalara customers, contact your customer account manager or open a support ticket

Fixes and improvements

AvaTax API enhancements:

Fixed various bugs with MultiTax APIs.
Updated CertExpressInvite API documentation.
Updated description of the LockTransaction API.
Fixed bug in ListTaxSubTypesByCountryAndTaxType API.

ENVIRONMENT	URL	RELEASE DATE
Sandbox	https://sandbox-rest.avatax.com	2023-01-05
Production	https://rest.avatax.com	2023-01-12