{
  "id": "CMP-SAMPLE-LEN",
  "slug": "cmp-sample-len",
  "title": "Each sample message must be 20–1024 characters",
  "statement": "Every sample message must be at least 20 and at most 1024 characters.",
  "rationale": "A sample under 20 characters cannot demonstrate a real message, and one over 1024 is not a text message at all. Both bounds are published and enforced mechanically at submission.",
  "layer": "CAMPAIGN",
  "layerSlug": "campaign",
  "object": "campaign.sample[]",
  "severity": "BLOCKING",
  "detectability": [
    "DETERMINISTIC"
  ],
  "failureClass": "RETRY_FIELD",
  "authorities": [
    "Twilio",
    "TCR"
  ],
  "applicabilityText": "Applies to every 10DLC registration.",
  "universal": true,
  "remediation": "Write realistic sample messages of at least 20 characters each.",
  "example": "Acme Coffee: 20% off all beans this weekend. Reply STOP to opt out, HELP for help.",
  "catalogIds": [
    "CMP-005"
  ],
  "phase": "approval",
  "automated": true,
  "url": "https://ekas.io/rules/10dlc/campaign/cmp-sample-len/",
  "markdown": "https://ekas.io/rules/10dlc/campaign/cmp-sample-len.md",
  "registry": "https://ekas.io/rules/10dlc/",
  "updated": "2026-07-25",
  "licence": "CC BY 4.0 — https://creativecommons.org/licenses/by/4.0/"
}