NO-R-001: For Norwegian suppliers, a VAT number MUST be the country…

StandardPeppol BIS Billing 3.0 country rules (NL, DE, IT, SE, DK, NO, GR, IS)CountryNorwaySeverityError: the invoice is rejectedSyntaxUBL, CIIApplies toOnly when the seller (or for some rules the buyer) is in the named country: the rule is triggered by the country code of the party. Dutch rules implement NLCIUS, German rules the XRechnung requirements inside Peppol.

Official rule text

[NO-R-001] For Norwegian suppliers, a VAT number MUST be the country code prefix NO followed by a valid Norwegian organization number (nine numbers) followed by the letters MVA.

Why this error occurs

The element is mandatory in this standard but is missing or empty in your file. Typical causes: the field is not filled in the invoicing software, the ERP export does not map it, or the element is present but contains only whitespace.

How to fix it

Add the element with a non-empty value at the position given by the context above. Check the master data (seller, buyer, payment) in your invoicing software; most tools expose the field under the business term name shown here. Re-validate after the change.

What the validator checks

Checked element (context):

UBL

cac:AccountingSupplierParty/cac:Party[$supplierCountry = 'NO']

Test (XPath):

cac:PartyTaxScheme[normalize-space(cac:TaxScheme/cbc:ID) = 'VAT']/substring(cbc:CompanyID, 1, 2)='NO' and matches(cac:PartyTaxScheme[normalize-space(cac:TaxScheme/cbc:ID) = 'VAT']/substring(cbc:CompanyID,3), '^[0-9]{9}MVA$')
          and u:mod11(substring(cac:PartyTaxScheme[normalize-space(cac:TaxScheme/cbc:ID) = 'VAT']/cbc:CompanyID, 3, 9)) or not(cac:PartyTaxScheme[normalize-space(cac:TaxScheme/cbc:ID) = 'VAT']/substring(cbc:CompanyID, 1, 2)='NO')

CII

ram:SellerTradeParty[$supplierCountry = 'NO']

Test (XPath):

ram:SpecifiedTaxRegistration[ram:ID/@schemeID = 'VAT']/substring(ram:ID, 1, 2)='NO' and matches(ram:SpecifiedTaxRegistration[ram:ID/@schemeID = 'VAT']/substring(ram:ID,3) , '^[0-9]{9}MVA$')
                and u:mod11(substring(ram:SpecifiedTaxRegistration[ram:ID/@schemeID = 'VAT']/ram:ID, 3, 9)) or not(ram:SpecifiedTaxRegistration[ram:ID/@schemeID = 'VAT']/substring(ram:ID, 1, 2)='NO')

Check your invoice

Drop your XML or PDF on the validator and every failed rule is linked to its page here. Free, no account, the file is not stored.

Check your invoice →

Same check via API:

curl -F file=@invoice.xml https://einvoicechecker.com/v1/validate

Related rules

NO-R-002 For Norwegian suppliers, most invoice issuers are required to append…

Frequently asked questions

What does NO-R-001 mean?

NO-R-001 is a peppol national rule: For Norwegian suppliers, a VAT number MUST be the country code prefix NO followed by a valid Norwegian organization number (nine numbers) followed by the letters MVA.

Will my invoice be rejected because of NO-R-001?

Yes. NO-R-001 is flagged "fatal"; validators (KoSIT, Peppol access points, the German ZRE/OZG-RE portals, KSeF) reject the invoice until it is fixed.

Which formats does NO-R-001 apply to?

Only when the seller (or for some rules the buyer) is in the named country: the rule is triggered by the country code of the party. Dutch rules implement NLCIUS, German rules the XRechnung requirements inside Peppol. Syntax: UBL and CII.

Source: Peppol BIS Billing 3.0.20 national rules (November 2025). Catalogue generated from the official rule sets on 2026-10-15.

NO-R-001: For Norwegian suppliers, a VAT number MUST be the country code prefix NO followed by a…