# UBL-CR-004

Quoted from a public specification. This page is not a validator, and it is not tax, legal, or accounting advice.

- Country: EU
- Syntax: UBL
- Severity: warning
- Statement language: en
- Last verified: 2026-10-18

## Official statement

> A UBL invoice should not include the CopyIndicator

Source: https://docs.peppol.eu/poacc/billing/3.0/rules/ubl-tc434/UBL-CR-004/

Peppol BIS Billing 3.0, May 2026 release, EN 16931 model bound to UBL

Severity note: warning, from the Flag column of the Peppol BIS Billing 3.0 UBL rules index retrieved 2026-10-18.

## Plain-language reading

A UBL invoice should not include CopyIndicator. The statement says "should not include the CopyIndicator", not "shall", and it has no period. The flag is warning. The context is the same string as BR-CO-18. The published test is not(cbc:CopyIndicator). It does not call exists.

## What to change

Leave CopyIndicator out of the UBL invoice.

## Illustration

Illustration of the condition in the official statement. Not an example published by the source.

**Fails the stated condition.** The invoice includes CopyIndicator.

**Passes the stated condition.** The invoice does not include CopyIndicator.

## Published context and test

Copied from the source. Not reimplemented on this page.

```
/ubl:Invoice | /cn:CreditNote
```

```
not(cbc:CopyIndicator)
```

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