{
  "id": "UBL-SR-24",
  "country": "EU",
  "syntax": "ubl",
  "group": "syntax",
  "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": "Deliver to information shall occur maximum once",
  "statement_lang": "en",
  "context": "/ubl:Invoice | /cn:CreditNote",
  "test": "(count(cac:Delivery) <= 1)",
  "meaning": "Deliver to information shall occur at most once. The statement has no period and says shall. It is 47 characters. The flag is fatal. The context is the same string as BR-CO-18. The published test counts cac:Delivery. The comparison has a space before <= and a space after it.",
  "fix": "Send at most one delivery element.",
  "example_fail": "The invoice has two delivery elements.",
  "example_pass": "The invoice has one delivery element, or none.",
  "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-SR-24/",
  "source_retrieved": "2026-10-18",
  "last_verified": "2026-10-18"
}