Elements

Name (Technical Name)	Cardinality	Description
Invoice Document Reference Extension (`Invoice/InvoiceDocumentReference/ InvoiceDocumentReferenceExtension/`)	1..1	A group of elements used to extend the Invoice Document Reference.
Correction Method (`Invoice/InvoiceDocumentReference/InvoiceDocumentReferenceExtension/ CorrectionData/CorrectionMethod`)	1..1	The codified method used for the correction.
Correction Reason (`Invoice/InvoiceDocumentReference/InvoiceDocumentReferenceExtension/ CorrectionData/CorrectionReason`)	1..1	An extension element used to provide the reason for the cancellation.

Country-Specific configuration

Poland B2B: Preceding Invoice Reference

Restrictions

You must use one of the following values for the Correction Method for Polish B2B Documents:

Correction Method Code	Description
`VRBL:PL:1`	In the case of an adjustment resulting on the date of recognition of the original invoice.
`VRBL:PL:2`	For a correction resulting on the date of issuance of the corrective invoice.
`VRBL:PL:3`	Correction resulting in a different date, including when for different items of the correction invoice these dates are different.

Example

<ubl:Invoice>
    <!-- Code omitted for clarity -->
    <cac:BillingReference>
        <cac:InvoiceDocumentReference>
            <cec:UBLExtensions>
                <cec:UBLExtension>
                    <cec:ExtensionContent>
                        <vrbl:InvoiceDocumentReferenceExtension>
                            <vrbl:CorrectionData>
                                <!-- Correction Type/Method -->
                                <vrbl:CorrectionMethod>VRBL:PL:3</vrbl:CorrectionMethod>
                                <!-- Correction Reason -->
                                <vrbl:CorrectionReason>Price reduction of 200 zł due to minor damage.</vrbl:CorrectionReason>
                            </vrbl:CorrectionData>
                        </vrbl:InvoiceDocumentReferenceExtension>
                    </cec:ExtensionContent>
                </cec:UBLExtension>
            </cec:UBLExtensions>
            <!-- Original Invoice Number -->
            <cbc:ID>INV12345_Buyer-PL-NIP_01</cbc:ID>
            <!-- Original Invoice KSeF Number -->
            <cbc:UUID>9999999999-20230908-8BEF280C8D35-4D</cbc:UUID>
            <!-- Original Invoice Date -->
            <cbc:IssueDate>2025-03-20</cbc:IssueDate>
        </cac:InvoiceDocumentReference>
    </cac:BillingReference>
    <!-- Code omitted for clarity -->
</ubl:Invoice>