Can I sue if I write a wrong name on the IOU? sure. According to the provisions of the second paragraph of Article 2 of the Provisions of the Supreme People's Court on Several Issues Concerning the Application of Law in the Trial of Private Lending Cases, the people's court shall accept a private lending lawsuit filed by a party who holds creditor's rights certificates, such as a receipt of loan, a receipt, an IOU, and other creditor's rights certificates without specifying the creditor. If the defendant raises a factual defense against the plaintiff's creditor qualification, and the people's court considers that the plaintiff does not have the creditor qualification after trial, it shall rule to dismiss the lawsuit. Note: Article 74 of the Several Provisions of the Supreme People's Court on Evidence in Civil Procedure stipulates that in the process of litigation, the people's court shall confirm the facts and evidence that the parties admit to be adverse to themselves in the pleadings, pleadings, statements and the proxy statements of their entrusted agents. However, unless the party reneges and there is evidence to the contrary sufficient to overturn it.