IT-R-001
BT-32 (Seller tax registration identifier) - For Italian suppliers BT-32 minimum length 11 and maximum length shall be 16. Per i fornitori italiani il BT-32 deve avere una lunghezza tra 11 e 16 caratteri
What does this rule mean?
An Italian seller tax registration identifier (BT-32) has an invalid length.
Italy requires 11 to 16 characters — eleven digits for organisations, sixteen characters for natural persons.
- BT-32
- Seller tax registration identifier
Official rule message (standard)
BT-32 (Seller tax registration identifier) - For Italian suppliers BT-32 minimum length 11 and maximum length shall be 16. Per i fornitori italiani il BT-32 deve avere una lunghezza tra 11 e 16 caratteri
Where the rule applies
Syntax: CII · UBL
The same rule, expressed twice: UBL and CII name the same fields with different paths. Running a CII file against the UBL rules is why you get errors that mean nothing.
UBL
cac:AccountingSupplierParty/cac:Party[$supplierCountry = 'IT']/cac:PartyTaxScheme[normalize-space(cac:TaxScheme/cbc:ID) != 'VAT']
CII
ram:SellerTradeParty[$supplierCountry = 'IT']/ram:SpecifiedTaxRegistration
Technical test
The rule passes when this Schematron expression holds true:
ram:ID[normalize-space(@schemeID) !='FC'] or matches(normalize-space(ram:ID[normalize-space(@schemeID) ='FC']) ,'^[A-Z0-9]{11,16}$') How to fix it
A missing or incorrect business entry only you can supply. Add or correct it, then re-check.
Correct the tax registration identifier to a permitted length.
Correct the affected entry in your XML, then re-check the invoice. Validation runs locally in your browser — your file never leaves your machine.
Check an e-invoice here
Drop an XML or ZUGFeRD PDF file here. Validation runs locally in your browser against EN 16931 — your file never leaves your machine.