What it means
When an invoice line classifies the item (BT-158), the classification system (BT-158-1) must be a code from UNTDID 7143, for example STI for CPV, TSP for UNSPSC or HS for the customs tariff.
Why it matters
Codes are read by software, not by people. A value outside the agreed code list cannot be interpreted, so the recipient's system rejects the invoice even when the value looks sensible to a person.
How to fix it
Store the classification system in your product data with its UNTDID 7143 code, for example STI for CPV codes, or remove the classification. If you build the XML yourself, it is the listID of cbc:ItemClassificationCode (UBL) or of ram:ClassCode (CII).
The rule as published
Item classification identifier identification scheme identifier MUST be coded using one of the UNTDID 7143 list. Where this rule applies
| Rule set | Version |
|---|---|
| EN 16931 (UBL) | 1.3.17 |
| EN 16931 (UBL credit note) | 1.3.17 |
| EN 16931 (CII) | 1.3.17 |
| XRechnung 3.0 (UBL) | 3.0.2 |
| XRechnung 3.0 (UBL credit note) | 3.0.2 |
| XRechnung 3.0 (CII) | 3.0.2 |
| Peppol BIS Billing 3.0 (invoice) | 2026.5 |
| Peppol BIS Billing 3.0 (credit note) | 2026.5 |
| SI-UBL 2.0 / NLCIUS (invoice) | 2.0.3.13 |
| SI-UBL 2.0 / NLCIUS (credit note) | 2.0.3.13 |
| NLCIUS (CII) | 1.0.3.13 |
| France CTC (UBL invoice) | 1.4.0-04 |
| France CTC (UBL credit note) | 1.4.0-04 |
| France CTC (CII) | 1.4.0-04 |
| CIUS-RO UBL Invoice 1.0.9 | 1.0.9 |
| CIUS-RO UBL Credit Note 1.0.9 | 1.0.9 |
Check your file
Drop your e-invoice to see whether BR-CL-13 still fails, and which other rules do.
Related rules
- BR-CL-14 Address country codes must be valid ISO 3166-1 codes
- BR-CL-15 The item's country of origin must be a valid ISO 3166-1 code
- BR-CL-16 The payment means code must come from UNTDID 4461
- BR-CL-17 VAT categories of the breakdown, discounts and charges must come from UNCL 5305
- BR-CL-18 VAT categories of invoice lines must come from UNCL 5305
- BR-CL-19 Allowance reason codes must come from UNTDID 5189