Send Peppol BIS Billing 3.0 invoices via a certified access point

Steps

1. Select an OpenPeppol-certified access point provider; your business does not connect directly to Peppol — all traffic flows through your access point's API, which handles SMP/SML routing, document wrapping (AS4), and delivery.
2. Register your business on the Peppol network through your access point provider; the provider registers your Peppol ID (typically ISO6523 scheme + your VAT or company number) in the Peppol SMP so buyers can discover your endpoint.
3. Build each invoice as a valid UBL 2.1 or CII XML document conforming to the Peppol BIS Billing 3.0 specification and the EN 16931 semantic model; validate against the official PINT or BIS Schematron rules before sending.
4. Submit the validated XML to your access point's outbound API (the exact endpoint and authentication method varies by provider); provide the recipient's Peppol ID so the access point can look up their endpoint in the SMP.
5. Monitor delivery status via your access point's status API or webhook; Peppol delivery uses AS4 messaging, and your access point will surface errors such as UNKNOWN_RECIPIENT (not registered on Peppol) or VALIDATION_ERROR.
6. For country-specific CIUS requirements (e.g., PINT-SG for Singapore, CIUS-REC-DE for German federal procurement, PINT-NO for Norway) generate the appropriate CIUS-flavored XML — a generic BIS 3.0 document may be rejected by receivers enforcing a national CIUS.