VAT-ID validity and the exemption decision are separate questions.
Previously VIES was only ever called when the destination already
qualified for the cross-border exemption (Österreich), so a garbage
VAT ID on a domestic order (e.g. "ED123456789" — not even a real
country code) sailed through with no feedback at all, and a
Deutschland/Schweiz customer got no confirmation their real VAT ID
was valid either. Now VIES checks any format-valid VAT ID regardless
of destination (data quality, same reasoning as company-settings'
own check) — the exemption itself still only applies when the
destination is also Österreich, a validated German VAT ID never
zero-rates a domestic sale. The status message now always shows
("✓ USt-IdNr. bestätigt", plus the exemption note only when it
actually applies) instead of staying hidden for non-Österreich
orders.
Also added maxLength to PLZ (per-country digit count) and USt-IdNr.
(14) checkout fields — they had pattern validation but nothing
stopping the browser from accepting more characters than could ever
be valid.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Marco
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