WebPOS is a web-based interface available to every taxpayer with access to Taxpayer Admin Portal (TAP). This simple tool will just offer you to create an invoice on the go, or if you have temporary issues with your EFD device on the premises, you can use the Web Invoicing section of the TAP portal.
NOTE: WebPOS neither stores your invoice data, nor adds cookies, so make sure you do not refresh the page while creating a new invoice. WebPOS is not responsible for any data loss. Use it responsibly.
Click here for TAP user manual, inside you will find instructions on how to use Web invoicing.