All data protocols on a netapp system require license codes for activation, and those license codes are only available to the original purchasor.
License codes for ONTAP 8.2 and later are locked to the serial number and older license codes are not compatible. License codes are also not transferrable, so you should not wipe the system unless you are the original purchasor and have those codes available.
As @aborzenkov says, the next steps depend what version and mode of ONTAP that system was previously running. If it is already running 8.3, control-c during the boot menu and choose option 4.
Correct - if the system is still under support, it is relatively easy - the account team that you bought the new system from will be able to help you get the transition licenses issued. If support has lapsed, it is more difficult.