Rules/Peppol BIS Billing 3.0/Warning
PEPPOL-COMMON-R056-1
Peppol BIS Billing 3.0.21Dutch VAT numbers (9944) MUST be stated in the correct format (NL123456789B12).
This rule has no plain-English explanation of our own yet. The official text above is exact.
A warning does not make the document invalid. Receivers may still act on it, so it is worth fixing.
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