bar code comes as a second page to the notification letter. if you printed out the letter, the second page should be the barcode (that's how i had it). if you don't have the separate bar code page, you don't have to send it at all. it's enough if you just send your 122 form (and 230 if you need one), 2 pictures and just mail it. They said to me and other people that bar code is not a must. The letter is for you only and no need to send it back to them.