IT-R-004: BT-38 (Seller post code) - Italian suppliers MUST provide the postal address post code -…

The rule applies to the supplier party in a UBL invoice when the supplier country is Italy (IT), determined from the VAT country code in the supplier's VAT identifier, the tax representative's VAT identifier, or the supplier's postal address country code. For an Italian supplier, the element cac:PostalAddress/cbc:PostalZone must be present under cac:AccountingSupplierParty/cac:Party. The test only checks for the element's existence, not that it contains a non-empty value, though the message states the supplier must provide the postal code (BT-38), in Italian 'CAP di residenza'.

Ensure that cac:AccountingSupplierParty/cac:Party/cac:PostalAddress/cbc:PostalZone is present and populated with the supplier's Italian postal code (CAP), e.g. 20100. If the element is missing, add it as a child of cac:PostalAddress. The rule as written does not reject an empty element, but to satisfy the stated requirement, provide the actual post code.