PEPPOL-EN16931-P0111: Keep antiques sold under the margin scheme in category E, not reverse charge

The short answer

PEPPOL-EN16931-P0111 fails for each cac:TaxCategory that carries VATEX-EU-J while its cbc:ID is not E. VATEX-EU-J says the sale falls under the margin scheme for collectors items and antiques, and Peppol accepts it only with the exempt category.

The recorded example sells an antique clock to a buyer with the VAT identifier DE123456789 and codes the breakdown and the line AE, as if the buyer accounted for the VAT. Under the margin scheme the seller accounts for VAT on its margin, so the reverse charge does not describe the sale.

What the rule checks

The exemption code is upper-cased and compared with VATEX-EU-J; a match needs the category E, trimmed. Spaces around the code are not removed: when tried, the code with a leading space in the AE breakdown passed every layer, although BR-CL-22 still accepted it as a VATEX code.

The buyer VAT identifier plays no part in the rule. When tried, the corrected exempt invoice with the buyer VAT identifier removed passed every layer as well, so it can be kept or dropped without affecting the pairing.

With the category left at AE, only the code can change. When tried, VATEX-EU-AE in place of VATEX-EU-J made the recorded example pass every layer; that is correct only if the sale is not made under the margin scheme.

How an integration ends up here

Possible causes, from the shape of the rule rather than from measured usage:

• The reverse charge is applied automatically whenever the buyer gives a VAT identifier from another member state, and the margin scheme only sets the exemption code.
• Antiques sold to other dealers are treated as trade sales and routed through the business-to-business tax rules.
• The label on the code list, "Intra-Community acquisition of collectors items and antiques", is read as a description of a cross-border trade sale.

How to fix it

1. Establish whether the antique is sold under the margin scheme. If it is, the category is E and VATEX-EU-J stays; the buyer does not account for the VAT.
2. Set cbc:ID to E on the breakdown and on the line of each item sold under the scheme, with the rate 0, as in the corrected example.
3. If the sale is not under the margin scheme, pick the category from the real treatment, for example K with VATEX-EU-IC for goods dispatched to a VAT-registered buyer in another member state, and drop VATEX-EU-J.

Validate your corrected invoice

Before and after

These are fragments, not complete documents. The complete synthetic documents they come from are linked below.

Fragment of the failing invoice: an antique sold under the margin scheme, coded reverse charge, AE

<cac:TaxSubtotal>
  <cbc:TaxableAmount currencyID="GBP">25.00</cbc:TaxableAmount>
  <cbc:TaxAmount currencyID="GBP">0.00</cbc:TaxAmount>
  <cac:TaxCategory>
    <cbc:ID>AE</cbc:ID>
    <cbc:Percent>0</cbc:Percent>
    <cbc:TaxExemptionReasonCode>VATEX-EU-J</cbc:TaxExemptionReasonCode>
    <cbc:TaxExemptionReason>Margin scheme - Collectors items and antiques</cbc:TaxExemptionReason>
    <cac:TaxScheme>
      <cbc:ID>VAT</cbc:ID>
    </cac:TaxScheme>
  </cac:TaxCategory>
</cac:TaxSubtotal>
<!-- totals and the start of the invoice line omitted from this fragment -->
<cac:Item>
  <cbc:Name>Antique clock</cbc:Name>
  <cac:ClassifiedTaxCategory>
    <cbc:ID>AE</cbc:ID>
    <cbc:Percent>0</cbc:Percent>
    <cac:TaxScheme>
      <cbc:ID>VAT</cbc:ID>
    </cac:TaxScheme>
  </cac:ClassifiedTaxCategory>
</cac:Item>

Fragment of the corrected invoice: the antique clock is exempt, E, under the same code

<cac:TaxSubtotal>
  <cbc:TaxableAmount currencyID="GBP">25.00</cbc:TaxableAmount>
  <cbc:TaxAmount currencyID="GBP">0.00</cbc:TaxAmount>
  <cac:TaxCategory>
    <cbc:ID>E</cbc:ID>
    <cbc:Percent>0</cbc:Percent>
    <cbc:TaxExemptionReasonCode>VATEX-EU-J</cbc:TaxExemptionReasonCode>
    <cbc:TaxExemptionReason>Margin scheme - Collectors items and antiques</cbc:TaxExemptionReason>
    <cac:TaxScheme>
      <cbc:ID>VAT</cbc:ID>
    </cac:TaxScheme>
  </cac:TaxCategory>
</cac:TaxSubtotal>
<!-- totals and the start of the invoice line omitted from this fragment -->
<cac:Item>
  <cbc:Name>Antique clock</cbc:Name>
  <cac:ClassifiedTaxCategory>
    <cbc:ID>E</cbc:ID>
    <cbc:Percent>0</cbc:Percent>
    <cac:TaxScheme>
      <cbc:ID>VAT</cbc:ID>
    </cac:TaxScheme>
  </cac:ClassifiedTaxCategory>
</cac:Item>

The failing invoice has AE where the corrected one has E, in the breakdown and on the antique clock line; VATEX-EU-J, the reason text and the buyer VAT identifier stay the same. The failing document reports only this rule: its AE breakdown has the reason and both VAT identifiers that EN 16931 asks of a reverse charge.

Where it applies

• Applies to UBL Invoice and CreditNote. When tried, a credit note with VATEX-EU-J in a G breakdown reported this rule.
• The pairing is checked on the Peppol layer only. BR-CL-22, on the EN 16931 layer, accepts VATEX-EU-J next to any category.
• An exempt margin scheme line needs a seller tax identifier under BR-E-02, such as the seller VAT identifier; the buyer VAT identifier is optional.

Related rules

• PEPPOL-EN16931-P0110 applies the same pairing to the works of art code VATEX-EU-I
• PEPPOL-EN16931-P0109 applies it to the second-hand goods code VATEX-EU-F
• BR-AE-02 lists the identifiers a genuine reverse-charge invoice needs
• BR-E-10 requires a reason on the exempt breakdown, which VATEX-EU-J supplies
• Browse every rule in the reference
• Background: How Peppol invoice validation actually works

Scope and source

Written for Peppol BIS Billing 3.0.21 (May 2026), EN 16931 1.3.16, as applied to UBL 2.1 Invoice and CreditNote documents. Other profiles, syntaxes and releases can define this identifier differently. Guidance version 2026-09-28.1: source checked 2026-09-28, explanation last updated 2026-09-28.

The official definition of PEPPOL-EN16931-P0111 carries the normative wording and test. This page is our explanation of it, not a copy.

Guidance does not change the engine verdict. Fixing this finding does not mean the document passes every layer, and validation does not certify legal or tax compliance or transmit a document over Peppol.