This API helps diagnose connectivity problems between your application and AvaTax; you may call this API even if you do not have verified connection credentials. The results of this API call will help you determine whether your computer can contact AvaTax via the network, whether your authentication credentials are recognized, and the roundtrip time it takes to communicate with AvaTax.
Records a new transaction in AvaTax. A transaction represents a unique potentially taxable action that your company has recorded, and transactions include actions like sales, purchases, inventory transfer, and returns (also called refunds).