Why am I seeing the error "The underlying connection was closed..." in Syspro?

Last updated
Save as PDF

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.