NO-R-001 A Norwegian seller's VAT number isn't in the NO…MVA format

What it means

This Norwegian rule in Peppol BIS checks the VAT number of Norwegian sellers (BT-31): it must be NO, then the 9-digit organisation number with a valid check digit, then MVA, as in NO123456789MVA. The seller's VAT number here doesn't match.

Common causes

• The MVA suffix is missing (NO123456789).
• Spaces or dots inside the number (NO 123 456 789 MVA).
• A typo in the organisation number, so its check digit fails.

How to fix it

Store the seller's VAT number as NO + 9 digits + MVA, with no spaces. Check the organisation number in the Brønnøysund Register Centre if unsure.

Who fixes it: The sender (a Norwegian seller), in its company settings.

Invoice fields involved

BT-31

Related rules

• BR-CO-09 A VAT number is missing its country prefix

This is our own plain-language explanation, not the official rule text. The official definition is in the first source below.