BR-02

Validation message

An Invoice shall have an Invoice number (BT-1).

Explanation

Every invoice must have a unique invoice number, assigned by the seller for identification purposes.

How to fix

Set the invoice number (BT-1).

This field is required by §14 Abs. 4 Nr. 4 UStG. A missing or incorrect value may affect input VAT deduction (Vorsteuerabzug) for the recipient.

Applies to