If i've received a paper saying Form 1099-INT from the IRS but that it doesn't look like a usual form, what should I do?

I received a letter from the IRS letting me know about some Interest Income for the year 2021, it does have "form 1099-INT" on it on the side, but does not look like a usual form with numbered boxes. I'm a little confused as to what I should be doing with it.