Issuing an invoice using Pre-numbered invoice book 
Due to a fiscal cash register not working – e.g. due to a hardware or software failure or a power outage, the taxpayer will have to issue invoices using a pre-numbered invoice book. It is important to note that the use of the pre-numbered invoice book feature is locally conditioned (in this case, limited to the area of Slovenia).

This chapter shows how to issue an invoice using the Pre-numbered invoice book.
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CASE SUMMARY
Due to the fiscal cash register not functioning, the person responsible wants to subsequently enter an invoice that they have already issued using a pre-numbered invoice book. This is done following the next steps:
- Opening General invoice data
- Entering Pre-numbered invoice book data
- Invoice list
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1. Opening General invoice data
The person responsible wants to subsequently enter an invoice that they have already issued using a pre-numbered invoice book.
For this purpose, they select the Retail POS | New invoice module.

An additional window with General data opens by clicking on the
(Show) button.
2. Entering Pre-numbered invoice book data
They then enable the Pre-numbered invoice book toggle button shown in the picture below.

After the toggle button is enabled, additional fields for entering Pre-numbered invoice book data are added to the POS form:
- set number,
- serial number, and
- document number.

The person responsible copies data from the invoice issued with a pre-number invoice book.

Data is entered as shown in the picture below.

The document can then be viewed in the list.
3. Invoice list
The person responsible selects the Invoice list | Detailed overview tab.
They find the desired document at the bottom of the window.

By clicking on the Eye icon, a drop-down list with printing options opens.

They select the printer: POSX Thermal Invoice and the print format: 856 - Invoice - 80mm thermal printer.
A Preview of the invoice with data from the invoice issued with a pre-numbered invoice book appears on the right side of the screen (as shown in the picture below).

After the invoice is printed, it is labeled Copy number: 1, as the original invoice was issued using a pre-numbered invoice book.
