The reasons for the internal error in the billing display of this tax bureau are as follows:

The reason for the internal error in the billing display of the electronic tax bureau is that the number is in arrears. Blacklist and other abnormal states. It needs to return to normal state before it can be issued. Paper invoice has been issued, and electronic invoice cannot be issued. The invoiceable amount has been exceeded. After the limit is exceeded, electronic invoices cannot be issued. It is necessary to print the original paper invoices in Unicom's own business hall.