I just spoke with my local dealer about the keys from VIN and I was told tha after 10 years they are purging the old information from the computer system. Looks like you are right on the edge of the cut off with a 2003.
They are purging old info. I'm a tech at a ford dealer and every once and awhile we run into someone losing all of there keys. Most of the time the customer ends up going to a locksmith because the only other way to get the code is to try and rip apart one of the door locks and they don't even have all the tumblers so it gets interesting. Id call your local lock smith and see what they can do for you.
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