When attempting to setup or synchronize an 'Any Source ADO' data source connection, you may encounter the following message:
Message: No license for feature 'Additional Data Sources'.
This message has been linked to the earliest iterations of the Jet Data Manager 2016 version. Please upgrade your Jet Data Manager to the latest version available for download here: http://jetreports.com/download. This has been fixed in more recent versions, so upgrading your Jet Data Manager should resolve your issue.