where can i find .rlf robot license file

Robot Controller
1

Incredible noob question: where can i find the .rlf robot license file (not robotstudio one)?
Thanks for your help

2

If you take a backup - it is in the BackInfo folder

3

Ah interesting, that is when backing up the system from the robot itself?
I mean rather than the simulation only? And then I have to load it in robotstudo?

4

Is adding the robot serial number in controller > motion important?