Core Viewpoint - The article introduces a convenient method for taxpayers to issue electronic invoices through the Electronic Tax Bureau APP using the "Scan to Invoice" feature, detailing the operational steps involved. Group 1: Operational Steps - Step 1: Taxpayers log in to the Electronic Tax Bureau APP as a business entity and navigate to "Invoice Usage" to access "Blue Invoice Issuance" [1]. - Step 2: Enter the "Blue Invoice Issuance" interface and click on "Scan to Invoice" [2]. - Step 3: Access the "Scan to Invoice" interface [3]. Group 2: QR Code Options - The system provides two types of QR codes: Basic Information QR Code and Transaction Information QR Code [4]. Group 3: Basic Information QR Code - For the Basic Information QR Code, taxpayers click on the relevant prompt to view and download the QR code, which allows the buyer to scan and fill in the invoice header information. This information will be synchronized and displayed on the main page for invoice issuance [6]. - Important: The validity period for the header information added via the Basic Information QR Code is 48 hours [7]. Group 4: Transaction Information QR Code - For the Transaction Information QR Code, taxpayers can switch to this option and fill in the invoice details, excluding the buyer's information, before generating the QR code [9]. - After confirming the generation, the system creates a Transaction Information QR Code, which can be saved or sent via email for the buyer to scan and complete the invoice issuance. The validity period for this QR code is 24 hours [11].