ONBOARDING

The process of integrating a new EDI partner — typically the most sensitive lead-time and cost line item of any programme.

Definition

EDI onboarding covers the full sequence that transforms a theoretical trading partner into an operational partner exchanging documents in production. A typical sequence includes:

1. Discovery: inventory of flows to exchange (ORDERS, DESADV, INVOIC, RECADV…), volumetry, timeline, existing identifiers (GLN, DUNS, ICD).
2. Technical specification: choice of syntax (EDIFACT D.96A, X12 005010, UBL 2.1) and transport protocol (AS2, OFTP2, SFTP, AS4 PEPPOL).
3. Connectivity: URL/IP exchange, X.509 certificate sharing, firewall opening, agreement on send windows.
4. Mapping: alignment of source format ↔ target format on each partner's side. The longest phase, 2 to 12 weeks depending on complexity.
5. Unit testing: validation against the internal spec (parser, business rules).
6. Bilateral testing: test data exchange with cross-validation. Often 3 to 5 cycles.
7. Progressive go-live: often a pilot partner then ramped switching, supervised for 4 to 8 weeks.

Standard lead time for an AS2/EDIFACT partner in grocery distribution runs 6 to 16 weeks. Marginal cost varies from a few hundred euros (integrator reusing a standard mapping) to several tens of thousands (custom Tier-1 to Tier-2 integration).

Origin

Onboarding has historically been the EDI bottleneck. The VANs of the 1980s-90s reduced cost by pooling mapping effort on the central buyer's side — a Tier-1 onboarded once on the VAN, and all its partners found their format there. AS2 reversed this model by enforcing point-to-point. PEPPOL flips the trend again with its 4-corner model: each partner onboards once with its Access Point, which then routes to any other Access Point on the network. This is PEPPOL's main economic argument.

Example in context

A French buying central wants to move 800 suppliers to e-invoicing in 2026. On the AS2 + EDIFACT path, average lead time would be 10 weeks per supplier, cost ~ €4,000 — impossible to scale. Solution adopted: move everything to PEPPOL BIS Billing 3.0, onboarding via their central Access Point. Per-supplier lead time cut to 1-2 weeks, marginal cost near zero. Programme wrapped in 9 months.

Related terms

• Trading partner — the party being onboarded.
• Mapping — the longest step of onboarding.
• PEPPOL BIS Billing 3.0 — the main economic argument here.
• ICD — an identifier to collect during discovery.