Why can’t I post into this period?

The app has refused an action because the accounting period covering the document’s date is no longer open. This happens whether you are issuing an invoice or credit note, booking a supplier invoice, changing the tax regime, or posting a journal entry, a payment, a fixed-asset depreciation entry or an opening balance. Which message you see depends on where you clicked.

What the screen says

Four places in the app show a Slovenian message naming the period and date.

Issuing an invoice (the Izdaj račun button):

Račun spada v zaključeno obdobje »julij 2026«. Obdobje znova odprite ali spremenite datume računa.

In English: the invoice could not be issued. The period “July 2026”, which covers its VAT tax point, is closed. The tax point is the service date printed on the invoice (or the end of the service period), otherwise the issue date: an invoice issued on 4 September for August work belongs to August. Reopen the period (the message carries an Open periods button), or change the service date or period, or the issue date. The invoice stayed a draft and took no number.

Issuing a credit note (the Izdaj dobropis button):

Dobropis spada v zaključeno obdobje »julij 2026«. Obdobje znova odprite ali dobropis datirajte v odprto obdobje.

Booking a supplier invoice (the Preveri in knjiži or Knjiži izbrane button):

Računa ni bilo mogoče knjižiti: obdobje »julij 2026«, v katero spada datum opravljene dobave oziroma izdaje, je zaključeno. Znova ga odprite ali dokument datirajte v odprto obdobje. Račun je ostal osnutek.

Changing the tax regime (Nastavitve → Nastavitve podjetja → Davčni režim, Settings → Company settings → Tax regime):

Davčni režim ni bil spremenjen: obračunsko obdobje »julij 2026«, ki sodi v davčno leto 2026 ali za njim, je zaključeno. Znova ga odprite ali režim določite od poznejšega davčnega leta. Režim odloča, ali se za te mesece sploh vodijo knjige.

If the period is locked rather than closed, the wording changes slightly: it says the period can no longer be reopened and points you straight at re-dating the document (or, for the tax regime, choosing a later tax year).

For everything else, for example posting a journal entry (the Knjiži button), posting a payment, importing opening balances, posting a fixed-asset depreciation entry, or the payroll journal, you get the general message:

The action could not be completed: accounting period “julij 2026”, which covers its value date, is closed. Reopen it, or re-date the action into an open period. Nothing was posted.

If the period is locked rather than closed, the same message says it can no longer be reopened, and points you only at re-dating.

The last sentence matters: nothing was posted, so there is no half-written entry left in the books to clean up afterwards.

Why this happens

A period is closed or locked deliberately, usually after its DDV-O VAT return has already been filed or its annual review is done. This stops a new document dated inside it from silently changing turnover FURS already has, or a journal entry that has already been checked. The difference between Zaprto (closed) and Zaklenjeno (locked) matters: a closed period can be reopened at any time, a locked one never can, not ever. The full closing, locking and reopening procedure is in Closing and locking periods.

What to do

1. Note the period name (for example “julij 2026”) and the disputed date from the message.
2. Decide whether it’s faster to change the document’s date or to reopen the period. For a single document, changing the date is usually faster.
3. To change the date, edit the invoice’s issue date, or the supply date, to a date inside an open period, then retry the action.
4. To reopen the period, go to Računovodstvo (Accounting) and open Upravljanje obdobij (Period management), click Ponovno odpri obdobje (Reopen period) in the period’s row, fill in a reason and click Potrdi (Confirm). This only works for a period in Zaprto (closed) status; a Zaklenjeno (locked) period can no longer be reopened. The full steps are in Closing and locking periods.
5. Retry the action, for example click Izdaj račun again, once the date is fixed or the period is reopened.

If you can’t fix this yourself

Reopening a period only actually takes effect for a user with the Administrator or Računovodja (Accountant) role. The Ponovno odpri obdobje button is still visible to a user without either role, but clicking it just reports that they don’t have permission, and the period stays closed. If you don’t hold one of these roles, ask someone who does to reopen it.