Peppol BIS Billing 3.0 / EN 16931 <2ms Edge Edge Compute

Peppol BIS Billing 3.0 UBL 2.1 E-Invoice Validator & Parser

Q: What is the difference between Peppol BIS Billing 3.0 and base EN 16931?

Peppol BIS Billing 3.0 is a CIUS (Core Invoice Usage Specification) that extends the base EN 16931 standard with Peppol network-specific rules, such as requiring ISO 6523 Electronic Address Scheme (EAS) endpoints for participant routing.

Validate and extract structured JSON from Peppol BIS Billing 3.0 OASIS UBL 2.1 electronic invoices and credit notes. This specification documents the exact field layout, checksum rules, and validation behavior so your integration matches Peppol BIS Billing 3.0 / EN 16931 without reading the source standard.

Latency: <2ms Edge Availability: 99.99% Standard: Peppol BIS Billing 3.0 / EN 16931-1 Verified: Sep 2026 In-Memory Execution

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⚡ Live Peppol BIS Billing 3.0 UBL 2.1 E-Invoice Validator & Parser Interactive Workbench

Test real-time validation and schema parsing for Peppol BIS Billing 3.0 UBL 2.1 E-Invoice Validator & Parser directly in your browser. Runs in sub-5ms with zero setup.

32KB Demo Cap 60 req/min Burst <2ms V8 Compute Zero Data Retention

input.xml 0 B

output.json demo-ready

Status: Ready

{
  "status": "Click RUN VALIDATION to execute on the Cloudflare edge..."
}

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LLM / MCP

Prompt-Ready Specification for AI Agents llms.txt

Structured format rules and schemas optimized for LLM coding agents and Model Context Protocol tooling.

Raw .md

Official Standard & Validation Protocol Authority: OpenPeppol AISBL & CEN TC 434 ↗

Quick Summary: Validate and extract structured JSON from Peppol BIS Billing 3.0 OASIS UBL 2.1 electronic invoices and credit notes. Validates strictly against Peppol BIS Billing 3.0 / EN 16931 with sub-5ms in-memory response times.

Latency

<2ms Edge

Standard

Peppol BIS Billing 3.0 / EN 16931-1

Version

Sep 2026 Edition

Max Payload

512 KB

Privacy

In-Memory (0 bytes stored)

Specification & Structural Breakdown

Technical Summary: Validates strictly against Peppol BIS Billing 3.0 / EN 16931. Payloads are parsed in memory and return clean, typed JSON in milliseconds with zero data logged.

Peppol BIS Billing 3.0 is the official Core Invoice Usage Specification (CIUS) across European public procurement and international B2B invoicing networks.

Deterministic validation of CustomizationID (urn:cen.eu:en16931:2017#compliant#urn:fdc:peppol.eu:2017:poacc:billing:3.0) and ProfileID.

Extracts supplier, customer, tax representative, and payee parties with postal address and ISO 6523 Electronic Address Scheme (EAS) endpoints.

UBL 2.1 Node	Field Name	Mandatory	Standard Rule
cbc:CustomizationID	Specification ID	Yes	BR-01 & PEPPOL-EN16931-R001
cbc:ID	Invoice Identifier	Yes	BR-02 (Max 500 chars)
cbc:IssueDate	Issue Date	Yes	BR-03 (YYYY-MM-DD)
cac:LegalMonetaryTotal	Monetary Totals	Yes	BR-CO-10 / 11 / 12 / 14
cac:TaxTotal	VAT Breakdown	Yes	BR-CO-15 / 17 / 18

Parsed JSON Response Model

The edge microservice transforms input payloads into strongly-typed hierarchical JSON envelopes with sub-5ms latency:

HTTP 200 JSON Response Envelope

{
  "valid": true,
  "syntax": "UBL_INVOICE",
  "profile": "PEPPOL_BIS_BILLING_3_0",
  "summary": {
    "status": "COMPLIANT",
    "fatalCount": 0,
    "warningCount": 0
  },
  "rulesChecked": 24
}

Copy-Paste Integration Code (6 Languages)

Integrate Peppol BIS Billing 3.0 UBL 2.1 E-Invoice Validator & Parser directly into your production application with native, zero-dependency code snippets in cURL, Node.js, Python, Go, C#, and a ready-to-paste Claude prompt. Get a free API key → (no credit card required):

curl --request POST \
  --url "https://api.stanzaapi.com/peppol-validator/api/v1/validate" \
  --header "Content-Type: application/json" \
  --header "x-api-key: YOUR_API_KEY" \
  --data '{
  "xml": "<?xml version=\"1.0\" encoding=\"UTF-8\"?><Invoice xmlns=\"urn:oasis:names:specification:ubl:schema:xsd:Invoice-2\"><cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:fdc:peppol.eu:2017:poacc:billing:3.0</cbc:CustomizationID><cbc:ID>INV-01</cbc:ID><cbc:IssueDate>2026-08-10</cbc:IssueDate><cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode><cac:AccountingSupplierParty><cac:Party><cac:PostalAddress><cac:Country><cbc:IdentificationCode>DE</cbc:IdentificationCode></cac:Country></cac:PostalAddress><cac:PartyLegalEntity><cbc:RegistrationName>Supplier</cbc:RegistrationName></cac:PartyLegalEntity></cac:Party></cac:AccountingSupplierParty><cac:AccountingCustomerParty><cac:Party><cac:PostalAddress><cac:Country><cbc:IdentificationCode>FR</cbc:IdentificationCode></cac:Country></cac:PostalAddress><cac:PartyLegalEntity><cbc:RegistrationName>Buyer</cbc:RegistrationName></cac:PartyLegalEntity></cac:Party></cac:AccountingCustomerParty><cac:TaxTotal><cbc:TaxAmount currencyID=\"EUR\">19.00</cbc:TaxAmount><cac:TaxSubtotal><cbc:TaxableAmount currencyID=\"EUR\">100.00</cbc:TaxableAmount><cbc:TaxAmount currencyID=\"EUR\">19.00</cbc:TaxAmount><cac:TaxCategory><cbc:ID>S</cbc:ID><cbc:Percent>19</cbc:Percent></cac:TaxCategory></cac:TaxSubtotal></cac:TaxTotal><cac:LegalMonetaryTotal><cbc:LineExtensionAmount currencyID=\"EUR\">100.00</cbc:LineExtensionAmount><cbc:TaxExclusiveAmount currencyID=\"EUR\">100.00</cbc:TaxExclusiveAmount><cbc:TaxInclusiveAmount currencyID=\"EUR\">119.00</cbc:TaxInclusiveAmount><cbc:PayableAmount currencyID=\"EUR\">119.00</cbc:PayableAmount></cac:LegalMonetaryTotal><cac:InvoiceLine><cbc:ID>1</cbc:ID><cbc:InvoicedQuantity unitCode=\"C62\">1</cbc:InvoicedQuantity><cbc:LineExtensionAmount currencyID=\"EUR\">100.00</cbc:LineExtensionAmount><cac:Item><cbc:Name>Item</cbc:Name><cac:ClassifiedTaxCategory><cbc:ID>S</cbc:ID><cbc:Percent>19</cbc:Percent></cac:ClassifiedTaxCategory></cac:Item><cac:Price><cbc:PriceAmount currencyID=\"EUR\">100.00</cbc:PriceAmount></cac:Price></cac:InvoiceLine></Invoice>"
}'

const response = await fetch("https://api.stanzaapi.com/peppol-validator/api/v1/validate", {
  method: "POST",
  headers: {
    "Content-Type": "application/json",
    "x-api-key": process.env.API_KEY || "YOUR_API_KEY"
  },
  body: JSON.stringify({
  "xml": "<?xml version=\"1.0\" encoding=\"UTF-8\"?><Invoice xmlns=\"urn:oasis:names:specification:ubl:schema:xsd:Invoice-2\"><cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:fdc:peppol.eu:2017:poacc:billing:3.0</cbc:CustomizationID><cbc:ID>INV-01</cbc:ID><cbc:IssueDate>2026-08-10</cbc:IssueDate><cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode><cac:AccountingSupplierParty><cac:Party><cac:PostalAddress><cac:Country><cbc:IdentificationCode>DE</cbc:IdentificationCode></cac:Country></cac:PostalAddress><cac:PartyLegalEntity><cbc:RegistrationName>Supplier</cbc:RegistrationName></cac:PartyLegalEntity></cac:Party></cac:AccountingSupplierParty><cac:AccountingCustomerParty><cac:Party><cac:PostalAddress><cac:Country><cbc:IdentificationCode>FR</cbc:IdentificationCode></cac:Country></cac:PostalAddress><cac:PartyLegalEntity><cbc:RegistrationName>Buyer</cbc:RegistrationName></cac:PartyLegalEntity></cac:Party></cac:AccountingCustomerParty><cac:TaxTotal><cbc:TaxAmount currencyID=\"EUR\">19.00</cbc:TaxAmount><cac:TaxSubtotal><cbc:TaxableAmount currencyID=\"EUR\">100.00</cbc:TaxableAmount><cbc:TaxAmount currencyID=\"EUR\">19.00</cbc:TaxAmount><cac:TaxCategory><cbc:ID>S</cbc:ID><cbc:Percent>19</cbc:Percent></cac:TaxCategory></cac:TaxSubtotal></cac:TaxTotal><cac:LegalMonetaryTotal><cbc:LineExtensionAmount currencyID=\"EUR\">100.00</cbc:LineExtensionAmount><cbc:TaxExclusiveAmount currencyID=\"EUR\">100.00</cbc:TaxExclusiveAmount><cbc:TaxInclusiveAmount currencyID=\"EUR\">119.00</cbc:TaxInclusiveAmount><cbc:PayableAmount currencyID=\"EUR\">119.00</cbc:PayableAmount></cac:LegalMonetaryTotal><cac:InvoiceLine><cbc:ID>1</cbc:ID><cbc:InvoicedQuantity unitCode=\"C62\">1</cbc:InvoicedQuantity><cbc:LineExtensionAmount currencyID=\"EUR\">100.00</cbc:LineExtensionAmount><cac:Item><cbc:Name>Item</cbc:Name><cac:ClassifiedTaxCategory><cbc:ID>S</cbc:ID><cbc:Percent>19</cbc:Percent></cac:ClassifiedTaxCategory></cac:Item><cac:Price><cbc:PriceAmount currencyID=\"EUR\">100.00</cbc:PriceAmount></cac:Price></cac:InvoiceLine></Invoice>"
})
});

const data = await response.json();
console.log(data);

import requests
import json

url = "https://api.stanzaapi.com/peppol-validator/api/v1/validate"
headers = {
    "Content-Type": "application/json",
    "x-api-key": "YOUR_API_KEY"
}
payload = {
    "xml": "<?xml version=\"1.0\" encoding=\"UTF-8\"?><Invoice xmlns=\"urn:oasis:names:specification:ubl:schema:xsd:Invoice-2\"><cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:fdc:peppol.eu:2017:poacc:billing:3.0</cbc:CustomizationID><cbc:ID>INV-01</cbc:ID><cbc:IssueDate>2026-08-10</cbc:IssueDate><cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode><cac:AccountingSupplierParty><cac:Party><cac:PostalAddress><cac:Country><cbc:IdentificationCode>DE</cbc:IdentificationCode></cac:Country></cac:PostalAddress><cac:PartyLegalEntity><cbc:RegistrationName>Supplier</cbc:RegistrationName></cac:PartyLegalEntity></cac:Party></cac:AccountingSupplierParty><cac:AccountingCustomerParty><cac:Party><cac:PostalAddress><cac:Country><cbc:IdentificationCode>FR</cbc:IdentificationCode></cac:Country></cac:PostalAddress><cac:PartyLegalEntity><cbc:RegistrationName>Buyer</cbc:RegistrationName></cac:PartyLegalEntity></cac:Party></cac:AccountingCustomerParty><cac:TaxTotal><cbc:TaxAmount currencyID=\"EUR\">19.00</cbc:TaxAmount><cac:TaxSubtotal><cbc:TaxableAmount currencyID=\"EUR\">100.00</cbc:TaxableAmount><cbc:TaxAmount currencyID=\"EUR\">19.00</cbc:TaxAmount><cac:TaxCategory><cbc:ID>S</cbc:ID><cbc:Percent>19</cbc:Percent></cac:TaxCategory></cac:TaxSubtotal></cac:TaxTotal><cac:LegalMonetaryTotal><cbc:LineExtensionAmount currencyID=\"EUR\">100.00</cbc:LineExtensionAmount><cbc:TaxExclusiveAmount currencyID=\"EUR\">100.00</cbc:TaxExclusiveAmount><cbc:TaxInclusiveAmount currencyID=\"EUR\">119.00</cbc:TaxInclusiveAmount><cbc:PayableAmount currencyID=\"EUR\">119.00</cbc:PayableAmount></cac:LegalMonetaryTotal><cac:InvoiceLine><cbc:ID>1</cbc:ID><cbc:InvoicedQuantity unitCode=\"C62\">1</cbc:InvoicedQuantity><cbc:LineExtensionAmount currencyID=\"EUR\">100.00</cbc:LineExtensionAmount><cac:Item><cbc:Name>Item</cbc:Name><cac:ClassifiedTaxCategory><cbc:ID>S</cbc:ID><cbc:Percent>19</cbc:Percent></cac:ClassifiedTaxCategory></cac:Item><cac:Price><cbc:PriceAmount currencyID=\"EUR\">100.00</cbc:PriceAmount></cac:Price></cac:InvoiceLine></Invoice>"
}

response = requests.post(url, json=payload, headers=headers)
print(response.json())

package main

import (
	"bytes"
	"fmt"
	"io"
	"net/http"
	"os"
)

func main() {
	url := "https://api.stanzaapi.com/peppol-validator/api/v1/validate"
	payload := []byte(`{"xml":"<?xml version=\"1.0\" encoding=\"UTF-8\"?><Invoice xmlns=\"urn:oasis:names:specification:ubl:schema:xsd:Invoice-2\"><cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:fdc:peppol.eu:2017:poacc:billing:3.0</cbc:CustomizationID><cbc:ID>INV-01</cbc:ID><cbc:IssueDate>2026-08-10</cbc:IssueDate><cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode><cac:AccountingSupplierParty><cac:Party><cac:PostalAddress><cac:Country><cbc:IdentificationCode>DE</cbc:IdentificationCode></cac:Country></cac:PostalAddress><cac:PartyLegalEntity><cbc:RegistrationName>Supplier</cbc:RegistrationName></cac:PartyLegalEntity></cac:Party></cac:AccountingSupplierParty><cac:AccountingCustomerParty><cac:Party><cac:PostalAddress><cac:Country><cbc:IdentificationCode>FR</cbc:IdentificationCode></cac:Country></cac:PostalAddress><cac:PartyLegalEntity><cbc:RegistrationName>Buyer</cbc:RegistrationName></cac:PartyLegalEntity></cac:Party></cac:AccountingCustomerParty><cac:TaxTotal><cbc:TaxAmount currencyID=\"EUR\">19.00</cbc:TaxAmount><cac:TaxSubtotal><cbc:TaxableAmount currencyID=\"EUR\">100.00</cbc:TaxableAmount><cbc:TaxAmount currencyID=\"EUR\">19.00</cbc:TaxAmount><cac:TaxCategory><cbc:ID>S</cbc:ID><cbc:Percent>19</cbc:Percent></cac:TaxCategory></cac:TaxSubtotal></cac:TaxTotal><cac:LegalMonetaryTotal><cbc:LineExtensionAmount currencyID=\"EUR\">100.00</cbc:LineExtensionAmount><cbc:TaxExclusiveAmount currencyID=\"EUR\">100.00</cbc:TaxExclusiveAmount><cbc:TaxInclusiveAmount currencyID=\"EUR\">119.00</cbc:TaxInclusiveAmount><cbc:PayableAmount currencyID=\"EUR\">119.00</cbc:PayableAmount></cac:LegalMonetaryTotal><cac:InvoiceLine><cbc:ID>1</cbc:ID><cbc:InvoicedQuantity unitCode=\"C62\">1</cbc:InvoicedQuantity><cbc:LineExtensionAmount currencyID=\"EUR\">100.00</cbc:LineExtensionAmount><cac:Item><cbc:Name>Item</cbc:Name><cac:ClassifiedTaxCategory><cbc:ID>S</cbc:ID><cbc:Percent>19</cbc:Percent></cac:ClassifiedTaxCategory></cac:Item><cac:Price><cbc:PriceAmount currencyID=\"EUR\">100.00</cbc:PriceAmount></cac:Price></cac:InvoiceLine></Invoice>"}`)

	req, _ := http.NewRequest("POST", url, bytes.NewBuffer(payload))
	req.Header.Add("Content-Type", "application/json")
	req.Header.Add("x-api-key", os.Getenv("API_KEY"))

	res, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)
	fmt.Println(string(body))
}

using System;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

class Program
{
    static async Task Main()
    {
        using var client = new HttpClient();
        client.DefaultRequestHeaders.Add("x-api-key", Environment.GetEnvironmentVariable("API_KEY") ?? "YOUR_API_KEY");

        var json = @"{""xml"":""<?xml version=\""1.0\"" encoding=\""UTF-8\""?><Invoice xmlns=\""urn:oasis:names:specification:ubl:schema:xsd:Invoice-2\""><cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:fdc:peppol.eu:2017:poacc:billing:3.0</cbc:CustomizationID><cbc:ID>INV-01</cbc:ID><cbc:IssueDate>2026-08-10</cbc:IssueDate><cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode><cac:AccountingSupplierParty><cac:Party><cac:PostalAddress><cac:Country><cbc:IdentificationCode>DE</cbc:IdentificationCode></cac:Country></cac:PostalAddress><cac:PartyLegalEntity><cbc:RegistrationName>Supplier</cbc:RegistrationName></cac:PartyLegalEntity></cac:Party></cac:AccountingSupplierParty><cac:AccountingCustomerParty><cac:Party><cac:PostalAddress><cac:Country><cbc:IdentificationCode>FR</cbc:IdentificationCode></cac:Country></cac:PostalAddress><cac:PartyLegalEntity><cbc:RegistrationName>Buyer</cbc:RegistrationName></cac:PartyLegalEntity></cac:Party></cac:AccountingCustomerParty><cac:TaxTotal><cbc:TaxAmount currencyID=\""EUR\"">19.00</cbc:TaxAmount><cac:TaxSubtotal><cbc:TaxableAmount currencyID=\""EUR\"">100.00</cbc:TaxableAmount><cbc:TaxAmount currencyID=\""EUR\"">19.00</cbc:TaxAmount><cac:TaxCategory><cbc:ID>S</cbc:ID><cbc:Percent>19</cbc:Percent></cac:TaxCategory></cac:TaxSubtotal></cac:TaxTotal><cac:LegalMonetaryTotal><cbc:LineExtensionAmount currencyID=\""EUR\"">100.00</cbc:LineExtensionAmount><cbc:TaxExclusiveAmount currencyID=\""EUR\"">100.00</cbc:TaxExclusiveAmount><cbc:TaxInclusiveAmount currencyID=\""EUR\"">119.00</cbc:TaxInclusiveAmount><cbc:PayableAmount currencyID=\""EUR\"">119.00</cbc:PayableAmount></cac:LegalMonetaryTotal><cac:InvoiceLine><cbc:ID>1</cbc:ID><cbc:InvoicedQuantity unitCode=\""C62\"">1</cbc:InvoicedQuantity><cbc:LineExtensionAmount currencyID=\""EUR\"">100.00</cbc:LineExtensionAmount><cac:Item><cbc:Name>Item</cbc:Name><cac:ClassifiedTaxCategory><cbc:ID>S</cbc:ID><cbc:Percent>19</cbc:Percent></cac:ClassifiedTaxCategory></cac:Item><cac:Price><cbc:PriceAmount currencyID=\""EUR\"">100.00</cbc:PriceAmount></cac:Price></cac:InvoiceLine></Invoice>""}";
        var payload = new StringContent(json, Encoding.UTF8, "application/json");

        var response = await client.PostAsync("https://api.stanzaapi.com/peppol-validator/api/v1/validate", payload);
        var content = await response.Content.ReadAsStringAsync();
        Console.WriteLine(content);
    }
}

Integrate the StanzaAPI peppol-validator micro-API.

Endpoint: POST https://api.stanzaapi.com/peppol-validator/api/v1/validate
Auth header: x-api-key: YOUR_API_KEY
Content-Type: application/json
Request body:
{
  "xml": "<?xml version=\"1.0\" encoding=\"UTF-8\"?><Invoice xmlns=\"urn:oasis:names:specification:ubl:schema:xsd:Invoice-2\"><cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:fdc:peppol.eu:2017:poacc:billing:3.0</cbc:CustomizationID><cbc:ID>INV-01</cbc:ID><cbc:IssueDate>2026-08-10</cbc:IssueDate><cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode><cac:AccountingSupplierParty><cac:Party><cac:PostalAddress><cac:Country><cbc:IdentificationCode>DE</cbc:IdentificationCode></cac:Country></cac:PostalAddress><cac:PartyLegalEntity><cbc:RegistrationName>Supplier</cbc:RegistrationName></cac:PartyLegalEntity></cac:Party></cac:AccountingSupplierParty><cac:AccountingCustomerParty><cac:Party><cac:PostalAddress><cac:Country><cbc:IdentificationCode>FR</cbc:IdentificationCode></cac:Country></cac:PostalAddress><cac:PartyLegalEntity><cbc:RegistrationName>Buyer</cbc:RegistrationName></cac:PartyLegalEntity></cac:Party></cac:AccountingCustomerParty><cac:TaxTotal><cbc:TaxAmount currencyID=\"EUR\">19.00</cbc:TaxAmount><cac:TaxSubtotal><cbc:TaxableAmount currencyID=\"EUR\">100.00</cbc:TaxableAmount><cbc:TaxAmount currencyID=\"EUR\">19.00</cbc:TaxAmount><cac:TaxCategory><cbc:ID>S</cbc:ID><cbc:Percent>19</cbc:Percent></cac:TaxCategory></cac:TaxSubtotal></cac:TaxTotal><cac:LegalMonetaryTotal><cbc:LineExtensionAmount currencyID=\"EUR\">100.00</cbc:LineExtensionAmount><cbc:TaxExclusiveAmount currencyID=\"EUR\">100.00</cbc:TaxExclusiveAmount><cbc:TaxInclusiveAmount currencyID=\"EUR\">119.00</cbc:TaxInclusiveAmount><cbc:PayableAmount currencyID=\"EUR\">119.00</cbc:PayableAmount></cac:LegalMonetaryTotal><cac:InvoiceLine><cbc:ID>1</cbc:ID><cbc:InvoicedQuantity unitCode=\"C62\">1</cbc:InvoicedQuantity><cbc:LineExtensionAmount currencyID=\"EUR\">100.00</cbc:LineExtensionAmount><cac:Item><cbc:Name>Item</cbc:Name><cac:ClassifiedTaxCategory><cbc:ID>S</cbc:ID><cbc:Percent>19</cbc:Percent></cac:ClassifiedTaxCategory></cac:Item><cac:Price><cbc:PriceAmount currencyID=\"EUR\">100.00</cbc:PriceAmount></cac:Price></cac:InvoiceLine></Invoice>"
}

Rules:
- Send the request with a 2-second timeout.
- Parse the standard envelope { success, data, meta: { latency_ms, version } }.
- On failure, read { success: false, error, code } and branch on the code.
- Do not retry 4xx responses; surface the error code to the caller.
- Treat invalid-but-well-formed payloads as HTTP 200 with data.valid === false.

Frequently Asked Questions & Technical Notes

What is the difference between Peppol BIS Billing 3.0 and base EN 16931?

Peppol BIS Billing 3.0 is a CIUS (Core Invoice Usage Specification) that extends the base EN 16931 standard with Peppol network-specific rules, such as requiring ISO 6523 Electronic Address Scheme (EAS) endpoints for participant routing.