You activated the Avalara standard integration and configured the Communication System and Communication Arrangement.
When creating a Sales Document such as a Sales Order the Tax Code is not determined and you get no response from Avalara.
SAP Business ByDesign
You are using the new REST API.
Avalara has provided two APIs for tax determination.
Business ByDesign uses the old REST API https://developer.avalara.com/api-reference/avatax/rest/v1/methods/getTax/.
The usage of new REST API https://developer.avalara.com/api-reference/avatax/rest/v2/methods/Transactions/CreateTransaction/ is not supported as of now.
You need to identify a mechanism of using the legacy API https://developer.avalara.com/api-reference/avatax/rest/v1/methods/getTax/ with Avalara.
Please also see the Blog: Avalara Configuration in SAP Business ByDesign
Avalara; No response; Tax Code; Not determined , KBA , AP-TTE-TC , Tax Calculation , AP-SLO-SO , Sales Order , Problem