How to choose an e-invoicing Access Point?

What Is an Access Point?

A Peppol Access Point is a certified gateway that connects your business to the Peppol e-invoicing network. It handles the secure transmission of invoices between trading partners using the AS4 protocol, performs SML/SMP lookups to route documents to the correct recipient, and validates invoices against Peppol BIS rules. Every business that wants to send or receive Peppol invoices must connect through an Access Point — either by using a provider or by becoming one. According to Invoice Navigator's analysis of the Peppol ecosystem, choosing the right Access Point is one of the most consequential decisions in your e-invoicing setup.

Selection Criteria

1. Certification and Compliance

The foundation of any Access Point evaluation starts with certification. A certified Peppol Access Point provider has been officially accredited by a Peppol Authority (the national body overseeing Peppol in each country) and is registered in the Peppol Service Metadata Publisher (SMP). OpenPeppol now requires all Access Point providers to hold ISO 27001 certification — an information security standard that ensures the confidentiality, integrity, and availability of data exchanged through the network. Verify the provider's certification status on the official OpenPeppol member directory before proceeding.

2. ERP and System Integration

The Access Point must integrate cleanly with your existing ERP or accounting system. Evaluate whether the provider offers a RESTful API, pre-built connectors for your ERP platform (SAP, Microsoft Dynamics, Oracle, Exact, etc.), or file-based integration (SFTP, AS2). The best providers handle data mapping — converting your ERP's native invoice format to Peppol BIS Billing 3.0 (UBL) — automatically, without manual intervention.

3. Transaction Volume and Scalability

Transaction volume varies from a few hundred invoices monthly for smaller businesses to millions for large enterprises. Confirm the provider can handle your current volume comfortably and has headroom for growth. Ask for concrete examples of similar-sized clients they support, not just theoretical maximums. High-volume businesses should also evaluate processing speed — some providers batch-process while others offer real-time delivery.

4. Geographic Coverage

If your business operates in multiple countries, the Access Point provider must support cross-border document exchange and meet local regulatory requirements in each jurisdiction. Belgium requires Peppol for B2B, several Nordic countries mandate it for B2G, and the network now spans over 30 countries including non-EU members like Singapore, Australia, and New Zealand. A provider with broad geographic coverage reduces the need for multiple vendor relationships.

5. Service Level Agreements (SLAs)

High reliability is critical, especially when government portals enforce submission deadlines. Evaluate the provider's uptime guarantee (look for 99.9% or higher), failover mechanisms, incident response times, and support availability. Peppol itself sets operational requirements that Access Points must meet — ensure the provider's SLAs meet or exceed these baselines.

Cost Structures

Key Questions to Ask Providers

• Are you a certified Peppol Access Point with current ISO 27001 certification?
• Which countries and Peppol document types do you support?
• What is your API integration method — REST, SFTP, pre-built ERP connector?
• What is your uptime SLA and average document delivery time?
• How do you handle invoice validation and error reporting?
• What is your pricing model, and are there volume-based discounts?
• Do you provide compliant invoice archiving?
• What onboarding support and documentation do you offer?

Validating Before You Send

Regardless of which Access Point you choose, Invoice Navigator recommends pre-validating every invoice against the full EN 16931 + Peppol BIS ruleset before submission. Access Points validate invoices at the transport layer, but catching errors earlier — at the ERP output stage — prevents rejections, retransmission delays, and compliance gaps. Invoice Navigator's validation API integrates alongside any Access Point to provide this pre-submission quality gate.