The Invoice Series value speicifies the series that a Document belongs to.

Use the InvoiceSeries Extension to specify this value.

This information is used to create the Invoice Series that is required by the AADE, as described in the Greece: Invoice Number Patterns topic.

If no series exists, specify zero for the value.

Elements

Element	Description
`Invoice/UBLExtensions/UBLExtension/ExtensionContent/InvoiceExtension/InvoiceSeries`	Specify a series number if one exists. If not, specify `0`.

Example

<ubl:Invoice>
    <cec:UBLExtensions>
        <cec:UBLExtension>
            <cec:ExtensionContent>
                <vrbl:InvoiceExtension>
                    <!-- Code omitted for clarity -->
                    <vrbl:InvoiceSeries>AB789</vrbl:InvoiceSeries>
                    <!-- Code omitted for clarity -->
                </vrbl:InvoiceExtension>
            </cec:ExtensionContent>
        </cec:UBLExtension>    
    </cec:UBLExtensions>
    <!-- Code omitted for clarity -->
</ubl:Invoice>