{
  "id": "UBL-CR-001",
  "country": "EU",
  "syntax": "ubl",
  "group": "excluded",
  "severity": "warning",
  "severity_note": "warning, 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": "A UBL invoice should not include extensions",
  "statement_lang": "en",
  "context": "/ubl:Invoice | /cn:CreditNote",
  "test": "not(ext:UBLExtensions)",
  "meaning": "A UBL invoice should not include extensions. The statement says \"should not\", not \"shall\", and it has no period. It says \"extensions\" and does not say \"the\". The flag is warning. The context is the same string as BR-CO-18. The published test is not(ext:UBLExtensions). It does not call exists. It does not read a cbc child.",
  "fix": "Leave extensions out of the UBL invoice.",
  "example_fail": "The invoice includes a UBL extension.",
  "example_pass": "The invoice includes no UBL extension.",
  "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/UBL-CR-001/",
  "source_retrieved": "2026-10-18",
  "last_verified": "2026-10-18"
}