If you believe the information you've sent to be valid and this is some error on their part, you can submit an appeal to Facebook.
If you're identity information was rejected, like your ID or something, there's some instructions to follow:
To submit an appeal, click the notification saying that your ID was rejected, or go to [Facebook website]/id. Find the authorization with the error, click Submit an Appeal, enter a reason why you think we made a mistake and then click Submit. After submitting your appeal, allow 48 hours for a response. Hope that helps somewhat.