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BR-CL-21 - Item standard identifier scheme: ISO 6523 ICD

The item standard identifier scheme identifier (BT-157-1) must belong to the ISO 6523 ICD code list.

BR-CL-21 - Item standard identifier scheme: ISO 6523 ICD

The item standard identifier scheme identifier (BT-157-1) must belong to the ISO 6523 ICD code list.

Code listsEN 16931BT-157 Error

What this rule checks

The item standard identifier scheme identifier (BT-157-1) must belong to the ISO 6523 ICD code list.

How to fix it

Use a valid ISO 6523 ICD scheme code (e.g. 0160 for GTIN).

Validate against this rule

This rule is part of EN 16931. Check your invoice with the validator that matches your format:

UBL / PeppolXRechnungFactur-X / ZUGFeRD

Related rules

BR-CL-01Invoice type code: UNTDID 1001BR-CL-03Amount currency (@currencyID): ISO 4217BR-CL-04Invoice currency code: ISO 4217BR-CL-05VAT accounting currency code: ISO 4217BR-CL-06VAT point date code: UNTDID 2005BR-CL-07Object identifier scheme: UNTDID 1153

Source: CEN EN 16931 Schematron · Last verified: 2026-07-10

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