validate_eori
Validate an EORI number
Structural check of an EORI number and, when the EU EOS provider is configured, an authoritative existence check. Provider outage or unknown status returns 'unavailable'/'needs_review', never a false 'invalid'. Structural validity is not proof of customs authorisation. Read-only preflight; not customs/tax/legal advice, not a customs decision or clearance.
eori