If the Supplier is on the PEPPOL network, you need to specify their PEPPOL ID in the Supplier Electronic Address element. This ID is a combination of a unique ID such as VAT ID and a scheme identifier from the CEF Electronic Address Scheme list here.

If you are using SMTP to send the Document via email, you still need to provide a valid address in the Supplier Electronic Address element.

Elements

Use the following sub-elements of the AccountingSupplierParty element:

Name (Technical Name)	Cardinality	Description
Supplier Electronic Address (`Invoice/AccountingSupplierParty/Party/EndpointID`)	1..1	The Supplier's electronic address ID
Supplier Electronic Address Identification Scheme Identifier (`Invoice/AccountingSupplierParty/Party/EndpointID @schemeID`)	1..1	The scheme to which the ID belongs

Example

PEPPOL

This is an example of a Supplier on the PEPPOL network:

<Invoice>
    <!-- code omitted for clarity -->
    <cac:AccountingSupplierParty>
        <cac:Party>
            <!-- Peppol ID: combination of schemeID and unique party ID -->
            <cbc:EndpointID schemeID="9930">DE123456789</cbc:EndpointID>
            <!-- code omitted for clarity -->
        <cac:Party>
        <!-- code omitted for clarity -->
    </cac:AccountingSupplierParty>
    <!-- code omitted for clarity -->
</Invoice>

SMTP

This is an example where the Document is sent via email, but you still need to specify the Supplier Electronic Address element for syntactical reasons:

<Invoice>
    <!-- code omitted for clarity -->
    <cac:AccountingSupplierParty>
        <cac:Party>
            <!-- Peppol ID: combination of schemeID and unique party ID -->
            <cbc:EndpointID schemeID="9930">DE123456789</cbc:EndpointID>
            <!-- code omitted for clarity -->
        <cac:Party>
        <!-- code omitted for clarity -->
    </cac:AccountingSupplierParty>
    <!-- code omitted for clarity -->
</Invoice>