Sage 50 US

Looking for the old Peachtree 2008 SDK. I still have the DLL but could not find the documentation. Can anyone help? Thanks.

I am creating an automated import of Purchase Invoices for a client who is using Peachtree 2008 Premier, and I've downloaded Sage 50 2016.0 SDK. I'm using the credentials that were provided when I downloaded the SDK and the function returns NULL. When…