# UBL-CR-523

> A UBL invoice should not include the InvoiceLine InvoicePeriod DescriptionCode

Checked against Peppol BIS Billing 3.0 2026.5

Canonical: https://einvoicecheck.eu/rules/ubl-cr-523

## Official rule text

A UBL invoice should not include the InvoiceLine InvoicePeriod DescriptionCode