/ubl:Invoice/cbc:UUID

Unique Unit ID

Context ID	INV0138
Cardinality	0..1
Usage	O

Description

A universally unique identifier for an instance of this document.

An element containing a universally unique identifier for an instance of this document.

For Polish KSeF FA(3) invoices which are picked-up from the KSeF platform (AP invoices) the KSeF Number will be provided in this element. The KSeF number is a unique, system-generated identification number assigned to every structured invoice once it has been successfully accepted. The scheme identifier attribute schemeID='VRBL:PL:NrKSeF' is used.

Details

vrbl-invoice-pl-b2b-3p0

For outbound invoices this field cannot be populated at the time of issuance because the KSeF number is not generated until the invoice is successfully uploaded and processed by the government platform.

Example:

<ubl:Invoice>
    <!-- code omitted for clarity -->
    <cbc:UUID schemeID="VRBL:PL:NrKSeF">3010912976-20260111-02004011DD86-F1</cbc:UUID>
    <!-- code omitted for clarity -->
</ubl:Invoice>