The xxxxx will need to be the table code that you see when you view a record in the original table. It will be the part after the db/ and will be about 7 characters long.
The Record ID to display will be whatever the field is called which is the Refresh Key on your Sync table. If you did not rename it, it is likely still called [Record ID#2]. You can rename that to be called what it is, which is [Record ID# of original source table record].
To get back to view the sync table record from the original table, try this