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UBL-SR-42

The seller has more than two tax entries (PartyTaxScheme)

Validation rule of EN 16931 (CEN, rule set 1.3.16) · Level: Error

What the message means

The seller has more than two tax entries (PartyTaxScheme).

What the issuer needs to change

Give at most the VAT number and the tax number.

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Origin

Rule set
EN 16931 (CEN, rule set 1.3.16)
Syntax
UBL
Level
Error

Original rule text

Party tax scheme shall occur maximum twice in accounting supplier party

Source: CEN/TC 434, EN 16931 validation rules 1.3.16, European Union Public Licence 1.2

Technical details for IT

UBL

Context: cac:AccountingSupplierParty/cac:Party
Test: not((count(cac:PartyTaxScheme) <= 2))

Related rules

All validation rules

Technical explanation by robin.vision, not tax or legal advice. Rules as of 31 August 2026 (KoSIT validator configuration).