The field acts as a filter because when you click the Get Entries button on an intrastat journal, the program retrieves from the Postavka artikla table only those entries that were posted in February, 2001.
Polje je filter, kajti ko kliknete gumb Dobi postavke v temeljnici intrastata, dobi program v tabeli Postavka artikla samo tiste postavke, ki ste jih knjižili februarja 2001.