While others guess, we validate.
Every preference claim over €6,000 requires a valid Registered Exporter number. BorderAudit validates REX numbers directly against the EU registry — catching revoked registrations, expired authorisations, and mismatched exporter details before HMRC does.
Direct EU REX registry API access · Real-time validation · UK exclusive
What REX validation checks
Registration status — Checks whether the REX number is valid, revoked, or expired in real time. No manual portal lookups, no outdated spreadsheets.
Exporter identity verification — Cross-matches the exporter name and address from your trade documents against the registry record. Catches mismatches that would invalidate the claim.
Automatic threshold triggering — Validation activates automatically when the customs value of a preferential claim exceeds €6,000 — the threshold where a REX number is legally required.
Intelligent caching — Respects REX validity periods to minimise API calls while ensuring registrations are checked at appropriate intervals.
Integration with document intelligence — REX numbers extracted from Statements on Origin by the AI document pipeline are validated automatically — no manual lookup required.
What happens without REX validation
Without REX validation
With BorderAudit
Competitors either skip REX validation entirely (risking HMRC rejection) or require manual checking against public EU portals. BorderAudit validates programmatically — contributing directly to the 91% first-time acceptance rate.