PEPPOL-EN16931-R020: Seller electronic address (BT-34) is missing

What does this mean?

Seller electronic address MUST be provided: the invoice must contain the seller electronic address (BT-34). It is missing.
The rule originates from Peppol BIS Billing 3.0 and is applied in the XRechnung validation. CII: ram:SellerTradeParty/ram:URIUniversalCommunication/ram:URIID, UBL: cac:AccountingSupplierParty/cac:Party/cbc:EndpointID.

Typical causes

The seller electronic address was not entered because it is optional in EN 16931.
Only the e-mail address of the contact (BT-43) was given; it does not replace BT-34.

How to fix the error

State BT-34 with an electronic address of the seller, e.g. an e-mail address.
State the matching scheme in BT-34-1 (e.g. EM for an e-mail address; see BR-CL-25).
Generate and validate the invoice again.

In E-Rechnungsfreund

In the invoice form, "Experte" view, section "Verkäufer (BG-4)" (seller), fill in the fields "Elektronische Adresse (BT-34/49)" (electronic address) and "EAS-Schema der elektron. Adresse (BT-34-1/49-1)" (electronic address scheme).

Example

Wrong

<ram:SellerTradeParty>
  <ram:Name>Sample Ltd</ram:Name>
  ...
</ram:SellerTradeParty>

Correct

<ram:SellerTradeParty>
  <ram:Name>Sample Ltd</ram:Name>
  ...
  <ram:URIUniversalCommunication>
    <ram:URIID schemeID="EM">invoice@example.com</ram:URIID>
  </ram:URIUniversalCommunication>
</ram:SellerTradeParty>

Related validation rules

• PEPPOL-EN16931-R001: Business process type (BT-23) is missing
• PEPPOL-EN16931-R005: VAT accounting currency (BT-6) equals the invoice currency (BT-5)
• PEPPOL-EN16931-R008: The invoice contains empty elements
• PEPPOL-EN16931-R010: Buyer electronic address (BT-49) is missing
• PEPPOL-EN16931-R040: Allowance or charge amount does not match base amount and percentage
• PEPPOL-EN16931-R041: Base amount missing for allowance or charge with percentage