Supplier and customer data audit for e-invoicing
A supplier data audit is an Agent Run that checks every record in your supplier and customer files: VAT numbers against VIES, duplicate records, bank-account red flags and Peppol IDs. You get a readiness score, a corrected file and a fix list with the evidence behind each finding. A person signs off every change.
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Why does supplier data matter for e-invoicing?
Structured e-invoices are routed by identifiers, not by names. A wrong VAT number or a duplicate supplier means an invoice that cannot be sent, received or matched.
Belgium has required structured e-invoices between VAT-registered businesses since 1 January 2026. In Luxembourg, bill 8815 would require in-scope businesses to receive them from 1 January 2028, and to issue them from 1 July 2028 or 1 January 2029 depending on size. The bill has not been voted, so these dates can change.
Sources: Chambre des Députés — dossier 8815 · FPS Finance (Belgium) · European Commission — eInvoicing in Luxembourg
What does the run do?
- 1Reads your supplier and customer export and normalises names, addresses and legal forms.
- 2Checks every VAT number: format first, then VIES.
- 3Finds duplicates by VAT number and by normalised name.
- 4Flags bank-account risks: IBANs shared by several suppliers, country mismatches, invalid check digits.
- 5Looks up which counterparties are on Peppol.
- 6Supervisor agents re-check each finding; a person reviews the fix list before anything changes.
What do you get?
- An e-invoicing readiness score for your file.
- A corrected file, ready to import.
- A fix list with the evidence for every finding.
- Your counterparties grouped by e-invoicing deadline.
- The run log and the scripts, so you can repeat the checks.
Watch a demo run
A replay of this run on synthetic data: agents spawn, write their own small tools, and every result is checked before it counts.
Replay of a demo run on synthetic data.
Supplier file (2,400 suppliers): 24 agents processed 2,400 records in 2h 00m of run time, found 263 issues, and supervisors verified all 160 batches. This is a replay of a demo run on synthetic data.
- being processed
- verified
- Invalid VAT number—
- Duplicate supplier—
- No Peppol ID—
- IBAN country mismatch—
- IBAN shared by several suppliers—
Agents in this run
Lead Supervisor / Editor Worker
- 24
- agents
- —
- queued
- —
- running
- 160
- verified
- 2,400
- records processed
- 263
- issues found
- 12.4M
- tokens
- 2h 00m
- run time
How much does it cost and how long does it take?
| Run | Price | What you get |
|---|---|---|
| Diagnostic Run | from €2,500 | The problem measured on your data, with evidence, and a fixed quote for the fix. |
| Build Run | €8,000–€24,000 | The fix itself. Up to 70% fundable through the SME Package AI. |
| Recurring Run | from €400/month | The same checks every month on new data. |
Typical Diagnostic timeline: 1–2 weeks
What access do you need to our data?
The least access that does the job: a masked export, a run inside your own cloud, or a short-lived read-only link.
The run sees
A file you export, with names and personal fields masked if you choose.
We never see
Your systems, your passwords, anything you did not export.
- EU-hosted models: Claude through Amazon Bedrock in EU regions.
- No stored passwords.
- A data processing agreement (GDPR Art. 28) from day one.
- A run log with every delivery.
- A person signs off every risk decision.
- Code and rights are handed over to you.
We build on top of your systems; we don’t take over your infrastructure.
Masked export: The run sees — A file you export, with names and personal fields masked if you choose. We never see — Your systems, your passwords, anything you did not export.
Runs inside your cloud: The run sees — Nothing leaves your cloud account. The run executes there and writes results there. We never see — A copy of your data on our side.
Short-lived read-only link: The run sees — Read-only access to the named tables, for the length of the run. We never see — Write access, admin rights, or access after the run ends.
Questions about this run
Can I try it before buying?
Yes. The free Supplier File Health Check runs the same basic checks on up to 500 suppliers in your browser. Only the VAT numbers are sent, to VIES.
Do you change our ERP directly?
No. You get a corrected file and a fix list. You or your integrator import the changes after review.
Which systems do you work with?
Any system that can export suppliers and customers to CSV or Excel, including Odoo, Sage BOB50 and Microsoft Dynamics 365 Business Central.
Scope this run
A 20-minute call: which data, which problem, and what a Diagnostic Run would measure and cost.
Book a 20-minute scoping call