Standalone E-Invoice Fast-Lane Mode

The Standalone E-Invoice Fast-Lane Mode (TWInvoiceOnly) allows cashiers to rapidly issue legal Taiwan Electronic Invoices (電子發票) without creating a dine-in table session or multi-step shopping cart. This is ideal for fast-paced retail checkout, pop-up events, and manual invoice corrections.

How to Use Fast-Lane Invoicing

1. Navigate to the Invoice Mode / TW Invoice Only button on the POS home screen.
2. Enter the transaction total amount (and optional tax rate / tax-exempt status).
3. Carrier & Tax ID Entry:
   • Unified Business Number (統一編號): Type the buyer’s 8-digit tax ID. The system validates the checksum automatically.
   • Mobile Carrier Barcode (手機條碼載具): Scan or type the customer’s / 7-character barcode.
   • Citizen Digital Certificate (自然人憑證): Scan or enter the certificate code.
   • Donation Code (愛心碼): Scan or enter a non-profit charity code.
   • Paper Invoice (電子發票證明聯): Leave carrier blank to immediately print the 2D barcode thermal paper invoice.
4. Tap Issue Invoice (開立發票).
5. The invoice is generated with an official track number (字軌), saved to the local database, and queued for automatic E0402 upload to the Ministry of Finance (財政部電子發票整合服務平台).

Voiding & Allowance in Fast-Lane Mode

• Void (作廢): If an invoice was issued in error within the current reporting period, find the invoice in Recent Invoices and tap Void Invoice.
• Allowance (折讓): For partial refunds on previously issued invoices, create a credit allowance memo directly linked to the original invoice number.