{
  "id": "XBC-008",
  "slug": "xbc-008",
  "title": "A sole proprietor gets one campaign and one number",
  "statement": "A SOLE_PROPRIETOR brand may hold exactly one campaign, and that campaign exactly one telephone number.",
  "rationale": "The sole proprietor tier is a low-volume path for individuals with no EIN, and the single-campaign, single-number limit is what the carriers accept in exchange for the reduced vetting. A second campaign is refused rather than queued, so somebody who registers a marketing campaign beside their appointment reminders loses the fee and the time. Pooling is the same limit stated the other way: there is only ever one number to pool.",
  "layer": "CROSS",
  "layerSlug": "cross",
  "object": "brand.entity_type + campaign count + campaign.number_pool",
  "severity": "BLOCKING",
  "detectability": [
    "DETERMINISTIC"
  ],
  "failureClass": "RETRY_FIELD",
  "authorities": [
    "TCR",
    "T-Mobile",
    "Twilio"
  ],
  "applicability": {
    "entityTypes": [
      "SOLE_PROPRIETOR"
    ]
  },
  "applicabilityText": "Applies when the brand is a sole proprietor.",
  "universal": false,
  "dependsOn": [
    "XBC-001"
  ],
  "remediation": "Fold everything the programme sends into the one sole-proprietor campaign, on one number, and turn number pooling off. If the business genuinely needs a second campaign or more throughput, obtain an EIN and re-register as a standard entity — the tier is the limit, not the campaign.",
  "example": "Sole proprietor: 1 campaign · 1 phone number · numberPool: false",
  "pitfalls": [
    "Registering the second campaign under a second sole-proprietor brand does not work either: the tier caps the mobile number behind the brands as well, so the same person cannot hold an unlimited number of them."
  ],
  "catalogIds": [
    "OPS-316"
  ],
  "phase": "approval",
  "automated": true,
  "url": "https://ekas.io/rules/10dlc/cross/xbc-008/",
  "markdown": "https://ekas.io/rules/10dlc/cross/xbc-008.md",
  "registry": "https://ekas.io/rules/10dlc/",
  "updated": "2026-07-25",
  "licence": "CC BY 4.0 — https://creativecommons.org/licenses/by/4.0/"
}