1. First click the menu item "Invoice Management/Invoice Void Management/Invoice with Failed Verification" to open the query page.
2. Secondly, click the "Query" button to query directly.
3. The finally found invoices that failed the inspection must be invalidated and reissued. If the invalid invoice continues to prompt "signature failed" and cannot be invoiced, it is recommended to bring the tax control panel to the tax bureau for non-tax declaration. Reasons for the failure of invoice verification: When uploading invoices on the Internet, the tax digital certificate will be invalid during the process of adding digital signatures to electronic invoices. Failure of the tax bureau's signing and inspection system will also lead to failure of signing and inspection.