Pre-numbered invoice book

If the fiscal cash register stops working due to hardware, software or power failure, a taxpayer is obliged to use a pre-numbered invoice book (PNIB) for issuing of invoices. The taxpayer has to fix the failure as soon as possible and send data on issued invoices to national Financial Administration within two working days from the day of device failure. If the taxpayer is issuing invoices with the pre-numbered invoice book due to cash register malfunction, they need to send the following data to the Financial Administration: PNIB serial number and the consecutive number of individual invoice forms. Financial Administration assigns these invoices their unique invoice ID (UIIM, otherwise automatically generated in the electronic information system and a mandatory part of an invoice) and sends this to the taxpayer as a post-festum proof of data sent and invoices issued.
If you want to enter an invoice into the program after already having entered it into the pre-numbered invoice book, you have to activate this by enabling the toggle button (make it colored).
This opens additional fields in the POS invoice form where you have to enter all the required numbers from PNIB:
- PNIB set number
- invoice number (in PNIB)
- PNIB serial number.

After printing the document, the pre-numbered book of invoices is confirmed and you can continue with entering another document PNIB.