Sends WooCommerce outgoing invoices straight to DATEV Unternehmen online — validated, immutable and with no middleware in the data path.
Sooner or later someone sits across from you and asks about one specific invoice: how was it created, is it unchanged since it was sent, and which path did it take into DATEV? The tax auditor asks this. Your accountant asks it. Sometimes your own business customer, whose system rejects a plain PDF invoice. In that moment it does not matter that the transfer somehow worked — what matters is what you can produce.
If your invoice path runs through a third-party middleware cloud, that very trail leads through a system you cannot see into. A booking whose path you cannot show is not a relief in an audit — it is an open flank. ZERYON DATEV is built so the answer is always on hand — from the cart to the DATEV job ID, unbroken and still verifiable years later.
ZERYON DATEV hands WooCommerce outgoing invoices and credit notes to DATEV Unternehmen online — through the official accounting:dxso-jobs V2 interface, without your invoice data ever touching a third party's server.
Where a plain export plugin only spits out a CSV file and a middleware routes your data through its cloud, ZERYON DATEV closes the gap between them: a validated, provable invoice path that stays on your own hosting. The same stance ZERYON Systems builds its controllable systems with — deterministic, fail-closed, provable — only deliberately without AI, because money and law call for determinism.
WooCommerce → DATEV via the official interface — no third party in the data path, data stays in-house.
Every invoice as a ZUGFeRD PDF (EN 16931), generated and validated — fail-closed before it reaches DATEV.
Immutable snapshots and an unbroken audit trail, verifiable for ten years under GoBD.
Secure-by-design: 138 tests, SBOM and a signed release. The discipline of financial software.
Nothing skips a check. The checkout never depends on DATEV — the actual chain runs asynchronously in the background.
The order is enqueued — under 1 second, checkout decoupled.
Immutable snapshot with checksum.
ZUGFeRD PDF/A-3 generated and validated against EN 16931.
Tax case determined deterministically, VIES checked — special cases wait for accountant approval.
document.xml + LEDGER XML, fail-closed against the v060 XSD.
Via dxso-jobs V2 to DATEV — each file individually.
DATEV job ID + audit trail, verifiable for 10 years.
Official DATEV interface (Rechnungsdatenservice 1.0), OAuth 2.0 / OIDC. No intermediary.
ZUGFeRD hybrid PDF (PDF/A-3, EN 16931 profile), validated against KoSIT — customer-ready and DATEV-ready in one step.
Standard, OSS, reverse charge, intra-community supply, export, §19 — with VIES check of the VAT ID.
Without a passed XSD and EN 16931 check and, for special cases, without accountant approval, the invoice stays blocked.
Every event immutable with checksum; append-only log, retained audit-proof for 10 years.
OAuth with PKCE, optional mTLS; tokens encrypted (libsodium), outside the web root, never in a log.
Asynchronous queue, staggered retry on technical errors, global transfer stop.
138 tests green, static analysis, SBOM (CycloneDX), signed release; HPOS-compatible; no AI in the data path.
| Trait | ZERYON DATEV | Middleware connector | Export plugin (CSV) | Manual |
|---|---|---|---|---|
| Direct path to DATEV, no third party | ✓ | ✗ | CSV | ✗ |
| E-invoice generated & validated | ✓ | partly | ✗ | ✗ |
| Fail-closed before transfer | ✓ | ✗ | ✗ | ✗ |
| Snapshot + audit trail (GoBD) | ✓ | partly | ✗ | ✗ |
| Data stays in-house | ✓ | ✗ | ✓ | ✓ |
| Fixed cost instead of per-invoice fee | ✓ | usually ✗ | ✓ | time |
"Records you can prove." — trigger, architecture, the four principles and the technical fact sheet on seven pages. For decision-makers, without jargon.
No per-invoice fee, no middleware cloud, no tiering by features — every license includes the full feature set. Price scales with reach.
All prices net, plus VAT. · A DATEV access (client, data release) is required for live operation and is usually provided through you or your accountant.
Yes. ZERYON DATEV transfers directly from WooCommerce to DATEV, with no third service in between. The plugin runs on your own hosting; your invoice data only leaves it in one direction — to DATEV.
No — the system is fail-closed. Without a passed XSD and EN 16931 check and, for non-standard tax cases, without the accountant's approval, an invoice stays blocked. Same input, same verifiable result — no silent automation that guesses when in doubt.
Your checkout never depends on DATEV. The queue waits, your shop keeps selling. Technical errors are retried in stages; a global kill switch stops all transfers instantly if needed.
No. Non-standard tax cases are put to the accountant for approval; the plugin does not decide over their head. It replaces the middleman, not the firm.
Yes. It usually comes from you or your accountant — client, access and data release. Until it is in place, the live upload stays deliberately locked: better blocked than transferred wrong.
1,490 € per year and WooCommerce shop, net plus VAT. An annual license with the full feature set; updates and support included while it is active — including legal and format updates (ZUGFeRD, DATEV schema). Multiple shops, clients, and agency or group licenses on request.
No, no AI in the data path. The invoice path is deterministic — same input, same verifiable result. So there is no black box and no AI-Act Annex IV concern in the processing.
Not a sales pitch. We go through your shop, your tax cases and your DATEV access and tell you exactly what is missing before going live.
Book a DATEV readiness check →