Core Viewpoint - The article provides a detailed guide on how to use the electronic tax bureau for issuing invoices, including steps for entering buyer and seller information, applying discounts, and finalizing the invoice process. Group 1: Invoice Issuance Process - Businesses can log into the electronic tax bureau's website and navigate to the invoice section to initiate the invoicing process [4]. - After accessing the invoice section, users can select the type of invoice and proceed to fill in the necessary information for both the buyer and seller [6]. - Users must input invoice details in the respective fields and can add discounts by selecting the appropriate options [8]. Group 2: Discount Application - The system allows users to choose between amount-based discounts and percentage-based discounts, with the option to specify the discount amount or rate [10]. - Once discounts are added, users can review the discount information in the invoice section before finalizing the invoice [11]. Group 3: Finalization and Delivery - After confirming the accuracy of the discount and invoice details, users can proceed to issue the invoice, which can be delivered via email or QR code [11].