You would have purchased an optional feature and received the software key to enable it at that time. If you no longer have the paper work for this, you could try reaching out to your sale rep to see if they can help you with that.
You may need a service technician if you are unable to get past the pop-up, please call the service department @ 1-800-821-2797.
Unfortunately, this pop-up seems permanent and i could not get past it. Pops up whenever i turn the machine on Does not let me do anything.
Thank you for using the forum, software keys are used to enable optional features.