Core Viewpoint - The article provides a detailed guide on how to use the electronic tax bureau for various invoice-related tasks, including issuing, voiding, and verifying invoices. Group 1: Invoice Management - Businesses can log into the electronic tax bureau's website to access invoice services [3] - The "Invoice Overview" section displays the current available paper invoice quantity, allowing users to navigate to the paper invoice voiding section [5] - To void an invoice, users must select the invoice in question, confirm the details in a pop-up window, and complete the voiding process [7] Group 2: Invoice Verification - After voiding an invoice, it is necessary to verify the voided invoice by searching for the "Invoice Verification" function on the electronic tax bureau homepage [7] - Users must select the voided invoice in the verification section, confirm the details, and submit to complete the verification process [5][7]