The Registrar provides the data which grants students eligibility for UNIs and email IDs. You will not be able to activate your UNI and email ID until data about your status as a student is in place. Once it is, you'll be able to activate your ID online

If you try to activate your ID BEFORE your data is in place, you will receive an error suggesting that you don't exist. Please wait at least a day before trying again.

Most incoming students will be able to activate their IDs sometime during the summer before arriving on campus, but the precise timing is not always predictable.