`BR-CO-21`

EN 16931 · validation rule

EN 16931Error

A document level allowance (BG-20) needs a reason text (BT-97) or a reason code (BT-98), or both. The sender must fill cbc:AllowanceChargeReason and/or cbc:AllowanceChargeReasonCode / ram:Reason and/or ram:ReasonCode.

Field: allowances[].reason (BT-97/BT-98)
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-CO-21?lang=en