UBL-CR-170: The seller's VAT details should not include a tax level code

What it means

UBL lets the tax details of a party carry a code for its tax level or status. EN 16931 does not have this. The tax details of the seller only hold the VAT number (BT-31) or another tax registration number (BT-32), each with the tax scheme it belongs to. This rule fails whenever cbc:TaxLevelCode is present, even if it is empty.

Why it matters

This rule is a warning, so the invoice is still accepted. The recipient's software has no field for the code and ignores it. It is worth fixing when your software adds it by default, or when a national rule you follow expects the information somewhere else.

How to fix it

The code usually comes from a national or software-specific setting. Check the tax settings for your own company in your invoicing software and look for an export option to leave it out. If you build the XML yourself, delete cbc:TaxLevelCode from cac:AccountingSupplierParty/cac:Party/cac:PartyTaxScheme and keep cbc:CompanyID with your VAT number.

The rule as published

A UBL invoice should not include the AccountingSupplierParty Party PartyTaxScheme TaxLevelCode

Where this rule applies