BR-52 - Each supporting document needs a reference
Each additional supporting document (BG-24) must contain a supporting document reference (BT-122).
BR-52 - Each supporting document needs a reference
Each additional supporting document (BG-24) must contain a supporting document reference (BT-122).
What this rule checks
Each additional supporting document (BG-24) must contain a supporting document reference (BT-122).
How to fix it
Add the AdditionalDocumentReference/ID (BT-122) to every supporting document.
Validate against this rule
This rule is part of EN 16931. Check your invoice with the validator that matches your format:
Related rules
BR-55Each preceding invoice reference needs a numberPEPPOL-EN16931-R003A buyer reference or a purchase order reference is requiredPEPPOL-EN16931-R080Only one project reference at document levelPEPPOL-EN16931-R100Only one invoiced object identifier per linePEPPOL-EN16931-R101Line document reference must be the invoiced objectBR-DE-21Specification identifier should be the XRechnung one
Source: CEN EN 16931 Schematron · Last verified: 2026-07-10
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