What it recognises
- VAT / enterprise numbers —
BE0123456789,0123.456.789; establishment units2.123.456.789. - IBANs (any country), with the Belgian bank from the NBB list, and old
123-4567890-12account numbers. - OGM / VCS structured communications
+++123/4567/89012+++and RF creditor references. - National register and BIS numbers (
85.07.30-033.28) — birth date and sex are derived; nothing is stored. - Peppol participant IDs (
0208:…,9925:…), BIC codes, and postcodes written as9000 Gent.
Numbers with a wrong checksum are listed too, marked invalid — useful for finding typos in exports and data-migration files.