2. Incorrect information input: In the process of invoice authentication, you will be asked to input some necessary information, such as invoice code and invoice number. Please carefully check whether the information entered is consistent with the actual invoice to ensure that there is no input error.
3. Abnormal invoice information: sometimes the invoice is abnormal, such as the invoice is invalid and has been authenticated. These situations can also lead to the inability to find invoice information during authentication. You can contact the supplier to verify the validity of the invoice and consult the relevant tax authorities for more help.