{
  "id": "BR-55",
  "country": "EU",
  "syntax": "ubl",
  "group": "document",
  "severity": "fatal",
  "severity_note": "fatal, from the Flag column of the Peppol BIS Billing 3.0 UBL rules index retrieved 2026-10-18.",
  "spec": "Peppol BIS Billing 3.0, May 2026 release, EN 16931 model bound to UBL",
  "statement": "Each Preceding Invoice reference (BG-3) shall contain a Preceding Invoice reference (BT-25).",
  "statement_lang": "en",
  "context": "cac:BillingReference",
  "test": "exists(cac:InvoiceDocumentReference/cbc:ID)",
  "meaning": "Each Preceding Invoice reference (BG-3) must contain a Preceding Invoice reference (BT-25). The message says \"shall contain\" and starts with \"Each\". It ends with a period. The same words name the group and the term. The context is a billing reference. The published test checks that an invoice document reference id exists. It does not check that the id is non-blank.",
  "fix": "On each preceding invoice reference, send a preceding invoice reference (BT-25) as the invoice document reference id.",
  "example_fail": "A billing reference has no invoice document reference id.",
  "example_pass": "That billing reference has an invoice document reference id.",
  "example_note": "Illustration of the condition in the official statement. Not an example published by the source.",
  "source_url": "https://docs.peppol.eu/poacc/billing/3.0/rules/ubl-tc434/BR-55/",
  "source_retrieved": "2026-10-18",
  "last_verified": "2026-10-18"
}