I can tell for Yamaha they are not using the hex codes on the Yamaha CI site and are using the old labels for many of the commands. For instance on the RX-A 60 series what I would call Scene 3 is labeled CD in the database. None of the RX-A 60 series have a CD button or input. Scene 3 is now called NET on the RX-A760/A860 and is called Scene 3 on the A-x060 models. But if you want scene 3 in the URC database you better know the history of Yamaha receivers because Scene 3 is still called CD in the their database.

Someone should go through and clean up their database. many of the Yamaha commands do not change year to year so making your own device or driver in TC for them is highly recommended.