ValidateFin

BR-CO-21 - Each allowance needs a reason

Each document-level allowance (BG-20) must have a document-level allowance reason (BT-97) or a document-level allowance reason code (BT-98).

BR-CO-21 - Each allowance needs a reason

Each document-level allowance (BG-20) must have a document-level allowance reason (BT-97) or a document-level allowance reason code (BT-98).

Allowances & chargesEN 16931BT-97 Error

What this rule checks

Each document-level allowance (BG-20) must have a document-level allowance reason (BT-97) or a document-level allowance reason code (BT-98).

How to fix it

Add a reason text (BT-97) or reason code (BT-98) to each document-level allowance.

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-CO-05Allowance reason code and text must agreeBR-CO-06Charge reason code and text must agreeBR-CO-22Each charge needs a reasonBR-31Each document-level allowance needs an amountBR-32Each document-level allowance needs a VAT category codeBR-36Each document-level charge needs an amount

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

All validation rules