BR-02
Core EN 16931 business rules · severity: error · in EN 16931 (UBL), EN 16931 (CII)
Official rule text
An Invoice shall have an Invoice number (BT-1).
What it means
The invoice number is missing.
Fields involved
BT-1Invoice number
How to fix it
Open the invoice in your invoicing software or XML, correct the fields named in the rule, and check the file again. Our free validator shows exactly where in the file the rule failed. If you need a new compliant invoice, you can create one for free.