Can the discharge be revoked?

The court may revoke a discharge under certain circumstances. For example, a trustee, creditor, or the U.S. trustee may request that the court revoke the debtor's discharge in a chapter 7 case based on allegations that the debtor: obtained the discharge fraudulently; failed to disclose the fact that he or she acquired or became entitled to acquire property that would constitute property of the bankruptcy estate; committed one of several acts of impropriety described in section 727(a)(6) of the Bankruptcy Code; or failed to explain any misstatements discovered in an audit of the case or fails to provide documents or information requested in an audit of the case. Typically, a request to revoke the debtor's discharge must be filed within one year of the discharge or, in some cases, before the date that the case is closed. The court will decide whether such allegations are true and, if so, whether to revoke the discharge.

In a chapter 11, 12 and 13 cases, if confirmation of a plan or the discharge is obtained through fraud, the court can revoke the order of confirmation or discharge.

(Excerpt from the US Bankruptcy Court website)