It says something about about aceptable zip code formats, but the zip code I’m enterring is a valid zip, and it’s in that format. I’ve tried other zip codes, still doesn’t work.
I suggest deleting and re-entering your 1098-T since you are getting an error in Check/Review. Also, this error occurs when the zip code doesn't match the state or street address you have entered.
You can look up the address at the United States Post Office to determine the correct zip code at https://tools.usps.com/go/ZipLookupAction!input.action