Legal analysis: Solution: If you need to modify the electronic invoice header after the network real-name registration system, you need to bring your personal certificate and instructions from the unit before you can modify the invoice header:

1. Bring your personal certificate to the telecom business hall and make the modification in person;

2. If the use of electronic invoices requires the company's business to look up, you need to issue a company authorization certificate before you can handle it (this content is written by yourself and stamped with the official seal of the company);

3. If the words in the telecom electronic invoice are modified, you need to bring a copy of the salary business license (stamped with the official seal), the authorization certificate of the unit and the original ID card of the handler to the business hall for processing.

Legal basis: Measures for the Administration of Invoices of the People's Republic of China

Article 19 Units and individuals that sell goods, provide services and engage in other business activities shall collect money from foreign businesses, and the payee shall issue invoices to the payer; Under special circumstances, the payer will issue an invoice to the payee.

article 21 all units and individuals engaged in production and business activities shall obtain invoices from the payee when purchasing goods, receiving services and paying for other business activities. When obtaining an invoice, it is not allowed to change the name and amount.