I can’t think of a workaround for you. We’re using the same code to validate photos tails that we use for flight tracking, where numbers only idents don’t appear.
You’ve got that the wrong way round. 67-9153 is the full identification. 79153 is the tail number. You should be putting the full ID on the photos to be correct.
There are many aircraft photos here with the wrong number because like RobK said, you should be putting the whole ID number, not just whats on the tail.
I posted a photo of an A-10, 79-0153. Concord977 posted a photo of the same aircraft that reads, N79153. If that registration was taken, somebody’s Cessna 150 might have had an A-10 photo attached to it.
I always research the military tails before I post them so I don’t put the wrong number. If I can’t find the correct number, I leave it blank.
Even though the system adds the “N” prefix, if you put the whole ID number, because 99.99% of military tail numbers, are not the full ID number, the photo will not attach to the wrong number.