Hi, I've just joined this forum and I'd just like to say that it's great to see you guys working on these codes, I'm an Audi tech in France and I can confirm that since Audi introduced the new A4, A5 and Q5 life has become rather difficult for us.
The way I see svm codes is that if the code exists then it has been approved by Audi, Once we use the code, We do in fact change the Data base in Germany and the equipment fitted appears in the list of original equipment for the car! I have used the codes and seen some time after that the list is indeed updated. And don't worry, when you pass for a service and the tech control your car with the vas, nothing will be lost.
This said, there are not a hell of a lot of codes avalible. Sometimes I just find another car and copy their hexa decimal codes, for example electric wing mirrors, but this does not work with MMI 3G, But were there's a will there's a way. We just have to serch in the right places!