Are we talking for the primary taxpayer, spouse, or dependent?    I've had returns never get rejected for bad birthdays for a dependent.    

Every birthday is a good birthday ---------------- as long as you can still blow out the candles 🎂

Oh noooooo.... don't let them blow out the candles.  Too risky with the virus.  Have to hand fan out the candles.     (yes, I fear the virus !)

Primary tax payer had the wrong date of birth.