This field contains the code for the number  series that will be used to assign a document number to the journal lines.  The journal lines are created for a contract when you run the Knjiži postavke predplacanih pogodb batch job. When the program  transfers the prepaid amount from the prepaid account to the income account  of the contract, the program creates two journal lines. One of lines is  for the prepaid account and another is for the income account, both with  the same document number.
V polju je prikazana šifra številčne serije, s katero program dodeli številko dokumenta vrsticam temeljnice. Vrstice temeljnice so ustvarjene za pogodbo, kadar zaženete paketno obdelavo Knjiži postavke predplačanih pogodb. Ko program prenese znesek predplačila s konta predplačil na konto prihodkov po pogodbi, ustvari dve vrstici temeljnice. Ena vrstica je za konto predplačil, druga za konto prihodkov, obe pa imata isto številko dokumenta.