Your identity information is incorrect; The bank account information you submitted is incorrect or invalid, which makes it impossible to refund the tax; There are errors or doubts in your application materials; During the audit, the tax authorities found it necessary to further verify the information from you, but you didn't provide the contact information or the contact information provided was incorrect, so they couldn't contact you; The tax authorities have verified the information about the annual settlement declaration from you, but you have not confirmed or explained it.