Generally with newer cars, BEM has gone as it was in its initial form very restrictive as it required the inputting of VW Group part numbers.
I'd think with your car the boxes needing filled will be, battery manufacturer, technology, capacity and serial number, which means when you fit "like for like" all that is needed as a minimum, is to change the last number of the serial number.
VW and Audi are not too smart when it comes to filling the details in at factory, so mainly they end up with all having the same battery manufacturer and serial number, SEAT actually seem to fill in the correct details, which must be easy to do at initial assembly as these batteries tend to have a QR tag on them and the assembly lines must have code scanners.