Sage 50 is a legacy, on-premise accounting system which requires an on-premise gateway to be installed. We recommend you get help from our Support team to do this, but please note that there are some minimum requirements to be aware of. We have documented these here, so please read this in full.
Should you have any questions regarding this document, please don't hesitate to get in touch with our Support team on 0330 0880 365, or drop them an email at help@prospectsoft.com.