SauRoNZA
Honorary Master
It's not the product code they list in the manual, it's the specification for the oil. You'll find the 50x.xx code listed on the back of the bottle if it is the correct spec.
http://www.oilspecifications.org/volkswagen.php
Maybe I'm too old school for it but in my mind a specification for oil reads as 5w30 or 20w50 or whatever viscosity you require, not some weird ass code that you need to go looking for on the back of the bottle.
Instead now they use a different code from each manufacturer which simply makes it confusing. Nowhere in my manual does it give the actual oil rating but instead uses their own VW code for it.