# Certn API Documentation

> Source: https://centric-api-docs.certn.co/#check-US_NATIONAL_SEX_OFFENDER_REGISTRY_1

### US National Sex Offender Registry

**US National Sex Offender Registry**

**Identifier:** `US_NATIONAL_SEX_OFFENDER_REGISTRY_1`

The US National Sex Offender Registry uses an applicant's provided name, date of birth and SSN, to search through over 4,000 law enforcement databases of sex offender information. Certn reports all discovered sex offender matches to the Applicant, regardless of state, to ensure a full report. You are responsible for ensuring compliance with applicable federal, state and local laws in applying the results.

**Ordering methods:** Invite, Quickscreen

### Response

**201 Created** — Successfully ordered. Use the returned `id` to retrieve the full case via `GET /api/public/cases/{id}/`.

### Error codes

| Status | Type | Description |
|--------|------|-------------|
| 400 | `validation_error` | Invalid request data |
| 401 | `client_error` | Authentication failed |
| 403 | `client_error` | Permission denied |
| 422 | `validation_error` | Request validation failed (e.g. missing required fields) |