Right, I saw that, but I can tell you that everyone going through Buffalo has a file number starting with B and/or F and followed by nine digits. F is for the electronic file, B for the physical one. I used my #Fxxxxxxxxx file number on my GCMS request without any problem, and the notes came back with that number on each page. What that sentence is about, I have no idea. It's possible that it's a relic from the previous iteration of the Privacy Act Request form which was around when visa offices were using another system, including another format for numbering files.