If there is a financial hold on your record, for example: do you have outstanding library fines, parking tickets, or do you owe money for tuition? Check the 'Financial Holds' option in the 'Personal Portfolio' menu on Bear Tracks to see if you have a hold on your record, the amount owing, and which Department you need to contact to clear the hold. Once you have cleared your hold, your record will be active and with no holds.
Are you trying to register in a section that has restricted enrolment? After you've ruled out all potential problems and you are still experiencing problems please contact your site coordinator for help.