1. The taxpayer registration status is normal;

2. The electronic business license is within the validity period; if it is authorized for use, it must be within the authorization period. 1. Electronic business license online update function node: Electronic Taxation Bureau - My Information - User Management - Certificate Management - CA Certificate/Electronic Business License Update Operation Steps 1. Log in to the Electronic Taxation Bureau and click on the menu bar on the homepage "My Information" enters user management, selects certificate management and switches to the CA certificate/electronic business license update tab page. 2. Select the electronic business license record and click Modify. 3. Select the electronic business license to scan the QR code to update. 4. Only after scanning the QR code is completed, the electronic business license can be updated. 2. Electronic business license online cancellation function node: Electronic Taxation Bureau - My Information - User Management - Certificate Management - CA Certificate/Electronic Business License Cancellation Operation Steps 1. Log in to the Electronic Taxation Bureau and click on the menu bar on the homepage "My Information" enters user management, selects certificate management and switches to the CA certificate/electronic business license cancellation tab page. 2. Click the logout button to pop up a confirmation dialog box. 3. Click Confirm and select the electronic business license for signature cancellation. 4. After generating the QR code, use the electronic business license applet or the Shanghai CA migration APP to scan the code. The deregistration can be successful only after the code is scanned successfully.