Having worked with some enterprise software before, this is not a surprise. What happens if you have multiple booking systems? You end up with 87734 being non-u

Having worked with some enterprise software before, this is not a surprise. What happens if you have multiple booking systems? You end up with 87734 being non-unique. GUIDs? What if the system was produced in the 80s? Having the scan code contain the same info as the boarding pass itself is just fine. It's what you would do with a paper pass anyway.