Hi there, there may be a really simple answer out there but I'm not finding it! LOL...

Is there a way to prevent someone from taking a course again on the same enrollment?  I need to keep their records for a full year. Their training certificate is valid for one year after which they are unenrolled, but some users go back in before the year is up and do the training again on the same enrollment. So, they get an updated certificate, but when their enrollment expires, all their training records are gone (because I have the enrollment set to delete after 365 days.) 

So, I guess what i want to happen is they go in and take the course and pass, get a valid training certificate. And then they can't do the course again until one year has passed.

I've asked them to unenroll before taking the course again, but most never do.