I don't understand the question.
Who is applying for naturalization?
What isn't your husband telling?
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Unfortunately, your question is unclear.
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If your husband's information is missing from the Form, there may be questions about the validity of the marriage during the N-400 interview. This is assuming you adjusted status on the basis of marriage to your husband. You would be well advised to talk this over with an immigration attorney.
Kindly note that this posting is offered for informational purposes only. It does not constitute an attorney-client relationship. Remember, this site is akin to an internet blog. Do not rely on information here to make important decisions in your life. Make an appointment to meet with a licensed attorney in his or her office (or via Skype or phone) to obtain competent personal and professional guidance.
You ought to know your husband's basic information. As for what happens if your N4-00 application is denied, you remain an LPR, unless some information about you, such as the existence of a criminal record, leads them to initiate removal proceedings.