# XBC-004 — Emergency and public-safety use cases exclude sole proprietors

> Public-safety and emergency use cases are not available to a SOLE_PROPRIETOR brand.

- **Rule ID:** XBC-004
- **Layer:** Brand ↔ campaign (`CROSS`)
- **Checks:** `brand.entity_type + campaign.usecase`
- **Severity:** BLOCKING — Breaking this rule gets the submission rejected outright.
- **When it bites:** Gates approval — get this wrong and registration is refused
- **How it is detected:** Deterministic (settled in code from the submitted values)
- **Fix type:** Fix the field — a better value in the form clears it
- **Required by:** TCR
- **Applies:** Applies when the brand is a sole proprietor.
- **Canonical URL:** https://ekas.io/rules/10dlc/cross/xbc-004/

## Why this rule exists

Emergency messaging bypasses filtering that protects consumers from everything else, so it is restricted to registered entities that can be held accountable for misuse. An individual with no EIN cannot be vetted to that standard.

## How to fix it

Register the organisation as a standard entity with its EIN. If the messaging is genuinely operational rather than emergency, choose CUSTOMER_CARE or ACCOUNT_NOTIFICATION instead.

## Example of a compliant value

```text
Entity type: PRIVATE_PROFIT or GOVERNMENT · Use case: EMERGENCY
```