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:

Added AutoLockOverrideDay parameter to Returns FilingRequest and FilingCalendar APIs
Updated Swagger models and description for Item APIs
Fixed issues with Colorado nexus names and descriptions

ENVIRONMENT	URL	RELEASE DATE
Sandbox	https://sandbox-rest.avatax.com	2023-01-26
Production	https://rest.avatax.com	2023-02-02