Description
Authorize.net is a third party gateway provider that can connect to a Paya merchant account. Authorize.net is commonly used to connect to 3rd party shopping carts that cannot directly connect to the Paya Gateway.

Resolution
In order to connect your account to Authorize.net, you will need to request a VAR sheet. This contains account hierarchy that will need to be provided to Authorize.net. Contact support to have a custom VAR sheet created for your account.