# BR-16 — No invoice line

> https://billhorse.com/en/rules/br-16/

## What does this error mean?

An EN 16931 invoice requires at least one invoice line (BG-25).

## How to fix it

Add at least one InvoiceLine (UBL) or IncludedSupplyChainTradeLineItem (CII). Exception: ZUGFeRD MINIMUM/BASIC WL intentionally omit lines.