# Testing

Source: https://developer.avalara.com/products/communications/integration-guides/communications-integration/spn7836230952931/

Guide: Communications

# Testing

Learn how to use the Sandbox environment to test integrations, customizations, and profiles.

Use the Sandbox environment to test the following:

-   Changes to your Communications REST v2 integration
-   Transaction customizations
-   New client profiles
-   Upcoming bill runs