This updated specification, version dated 31.03.2023, represents the Core Invoice Usage Specification (CIUS ) in accordance with the SRPS EN 16931-1:2019/A2:2020 standard.

The specification is intended for invoices in domestic trade in the Republic of Serbia, which are exchanged via the electronic invoice system in accordance with the Law regulating electronic invoicing.

In the technical specification for field BT-156, we are adding a note on usage: "In the case of bank fees, commissions and interest, this element should begin with "BNKTR:", and may be followed by additional characters that more closely identify the subject of invoicing."