`BR-51`

EN 16931 · validation rule

EN 16931Warning

The payment card number (BT-87) looks like a full primary account number. For PCI compliance the sender should send at most the first 6 and last 4 digits (cac:CardAccount/cbc:PrimaryAccountNumberID / ram:ApplicableTradeSettlementFinancialCard/ram:ID).

Field: payment.card_number (BT-87)
Rule set: EN 16931
Rule-set version: EN 16931 validation artefacts 1.3.17 · in force since 2026-10-13 · Rule-set changelog
Who has to fix it: The sender

This is a property of the file you received, so it cannot be corrected on your side without changing the document — ask the supplier to reissue it.

Check your own invoice

Drop the file that failed. We parse it, run the official rule sets against it and list every finding with a fix — 20 invoices per day, no key, nothing stored.

Open the live demo

Same explanation over the API: GET /v1/rules/BR-51?lang=en