After you complete your initial setup in the Sovos developer sandbox environment and sandbox environments for required tax authorities, test your configuration to make sure it works correctly.

1. Complete some basic health checks for your configuration.
   1. Test whether you're receiving responses from Sovos through the API.
   2. Test whether you're receiving responses from the tax authorities through the API.
2. Test whether you can check the responses you're receiving from Sovos and the tax authorities and reconcile the responses.
   Response management is a common trouble area. Make sure you can retrieve and acknowledge responses correctly, so that you can understand your invoice statuses and be alerted to failures or problems.
3. Identify further use cases you need to test based on the required countries and your business needs.
4. Test both positive and negative responses, to ensure you handle errors correctly.
   Tip: Errors are usually due to a mistake in configuration or due to mapping tax information in a way that the tax authority won't accept. Reach out to Sovos to resolve any problems you encounter.