my Audi A3 - 14 reg had to have a particular battery because of the stop/start and also the ECU had to be told it was a new battery and programmed in.
I was going to replace myself from halford, but thats when i got the advice and my local halfords did not have the kit for my car.
Plus the garage i usually use, had to order the battery in as they did not have on shelf, and then program it, which took a lot longer, i suspect they share the kit between garages for different makes - i know my old garage in Surrey did that , since the cost was so high for anything other than the generic types. Things may have changed a bit recently with covid