{
  "id": "CMP-018",
  "slug": "cmp-018",
  "title": "Attributes that do not apply to the registration type must be empty",
  "statement": "Conditionally-allowed fields must not be populated when they do not apply to the chosen registration type.",
  "rationale": "Populating a field the registration type does not have produces a contradictory record, and validation rejects contradictions rather than ignoring surplus data. It typically happens when a form is cloned from a different brand tier.",
  "layer": "CAMPAIGN",
  "layerSlug": "campaign",
  "object": "campaign attributes",
  "severity": "MEDIUM",
  "detectability": [
    "DETERMINISTIC"
  ],
  "failureClass": "RETRY_FIELD",
  "authorities": [
    "TCR",
    "Twilio"
  ],
  "applicabilityText": "Applies to every 10DLC registration.",
  "universal": true,
  "remediation": "Clear attributes that do not apply to this registration type before submitting — notably number pooling on a sole proprietor campaign, which is limited to a single number.",
  "example": "Sole proprietor campaign: number pool false, single number only.",
  "phase": "approval",
  "automated": true,
  "url": "https://ekas.io/rules/10dlc/campaign/cmp-018/",
  "markdown": "https://ekas.io/rules/10dlc/campaign/cmp-018.md",
  "registry": "https://ekas.io/rules/10dlc/",
  "updated": "2026-07-25",
  "licence": "CC BY 4.0 — https://creativecommons.org/licenses/by/4.0/"
}