Sole proprietor brands may only run the sole proprietor use case

The requirementstatement

A SOLE_PROPRIETOR brand must register its campaign under the SOLE_PROPRIETOR use case; standard campaign types are unavailable to that tier.

Severityseverity: BlockingBLOCKINGBreaking this rule gets the submission rejected. There is no partial credit.
When it bitesphase: Gates approvalapprovalGet this wrong and the brand or campaign is refused at registration.
What is checkedobject: brand.entity_type + campaign.usecase
Where it liveslayer: Brand ↔ campaignCROSS
How Ekas settles itdetectability: DeterministicDETERMINISTIC; Settled in code from the values you submitted. No model involved, no judgement call, same answer every time.
What the fix involvesfailureClass: Fix the fieldRETRY_FIELD; A better value in the form fixes it. Ekas can rewrite it and re-check.
Who requires itauthorities: TCRTwilio
When it appliesapplicabilityText: Applies when the brand is a sole proprietor.

Why this rule existsrationale

The sole proprietor tier exists as a low-volume path for individuals with no EIN, and it comes with its own throughput caps and a single-number limit. Standard use cases assume a vetted registered entity behind them, so the platform refuses the combination rather than granting an individual standard-tier treatment.

How to fix itremediation

Select the Sole Proprietor use case for this campaign. If you need a standard use case such as Marketing, obtain an EIN and re-register the brand as a standard entity first — the tier, not the campaign, is what limits you.

A compliant exampleexample

Use case: SOLE_PROPRIETOR

Only meaningful once these passdependsOn

BRD-065Sole proprietor must have no EIN

Notesnotes

Catalog BRD-089. The most common failure after a sole proprietor brand is itself accepted.

Rules you will hit next

2 other rules read brand.entity_type + campaign.usecase. Fixing one field to satisfy a single rule is how a resubmission trades one rejection for another, so read these before you change anything.

XBC-003Political use case requires a non-profit brand with political vettingBlockingBLOCKING XBC-004Emergency and public-safety use cases exclude sole proprietorsBlockingBLOCKING BRD-065Sole proprietor must have no EINBlockingBLOCKING XBC-008A sole proprietor gets one campaign and one numberBlockingBLOCKING XBC-002Charity use case requires a verified 501(c)(3) non-profit brandBlockingBLOCKING XBC-005Sole proprietor brand and campaign both require a reference IDBlockingBLOCKING

All brand ↔ campaign rules

XBC-001 is one of 13 brand ↔ campaign rules in the 915-rule 10DLC registry. Free to cite under CC BY 4.0.