Dear all, I met a very strange thing today. After I submitted my DS160 form, I continue to create applicant to make an interview appointment and pay the fee. But when I input my DS160 confirmation number (barcode), it shows that this barcode has been taken, so I cannot create applicant. It is very strange. Does it mean that someone mistyped my DS160 barcode to make an interview appointment before me? Did anyone met this problem before? I am looking forward to the answer.