Why am I seeing the error "The underlying connection was closed..." in Syspro?
Overview
I've placed my credentials into the proper spot and the test connection passes, however I receive an error when I try to calculate that states : "The underlying connection was closed; an unexpected error occurred on a receive."
Environment
Avalara Avatax
Syspro
Resolution
- This can happen if your are using a forward slash at the end of the service URL
- Example : https://avatax.avalara.net/
- Try removing the / and using https://avatax.avalara.net
- This should allow you to call out to us for tax.