User blog comment:Linathan/Guide: How to claim your FREE unit (Brave Frontier 2nd Anniversary) & Lucia/@comment-162.196.169.254-20151102060708/@comment-26424404-20151102164217

Yes, if your ID has a leading zero you need to put it in the entry form. The reason why you have to put in the parentheses is because the form will remove the leading zero and you will not get your unit.