> The failure of invoicing may be due to the fact that the amount invoiced offline was exceeded at the time of invoicing, which means that the invoice you prepared has not been uploaded to the system of the tax bureau. < br > The specific reasons are as follows: 1. When uploading invoices on the Internet, the tax digital certificate will be invalid in the process of adding digital signatures to electronic invoices. < < br > > second, the failure of the tax bureau's inspection signing system will also lead to the failure of inspection signing. These are caused by non-human factors, which are rare, but they are inevitable at present. < < br > > failed invoices must be voided and reopened, and cross-month invoices need to be added to the tax bureau stub.