BR-52
Each Additional supporting document (BG-24) shall contain a Supporting document reference (BT-122).
What does this rule mean?
An additional supporting document (BG-24) is missing its reference (BT-122).
Every supporting document must be identified by a reference.
- BG-24
- Additional supporting documents (group)
- BT-122
- Supporting document reference
Official rule message (standard)
Each Additional supporting document (BG-24) shall contain a Supporting document reference (BT-122).
Where the rule applies
Syntax: CII · UBL
The same rule, expressed twice: UBL and CII name the same fields with different paths. Running a CII file against the UBL rules is why you get errors that mean nothing.
UBL
cac:AdditionalDocumentReference
CII
//ram:AdditionalReferencedDocument
Technical test
The rule passes when this Schematron expression holds true:
normalize-space(ram:IssuerAssignedID) != ''How to fix it
A missing or incorrect business entry only you can supply. Add or correct it, then re-check.
Add the supporting document reference.
Correct the affected entry in your XML, then re-check the invoice. Validation runs locally in your browser — your file never leaves your machine.
Check an e-invoice here
Drop an XML or ZUGFeRD PDF file here. Validation runs locally in your browser against EN 16931 — your file never leaves your machine.