# Certn API Documentation

> Source: https://centric-api-docs.certn.co/#check-US_NATIONAL_CRIMINAL_DATABASE_1

### US National Criminal Database (with alias)

**US National Criminal Database (with alias)**

**Identifier:** `US_NATIONAL_CRIMINAL_DATABASE_1`

The US National Criminal Database (with alias) uses a applicant’s name and date of birth, along with any additional names found through a Social Security Trace check, to search criminal justice databases across the United States for criminal records. If a potential record is found, Certn verifies it by conducting a county-level search in the jurisdiction where the record was identified. This ensures that only the most accurate, up-to-date, and complete information is reported. County verifications are conducted at the central courthouse in the relevant county, where the majority of felony and misdemeanor records are maintained. Please note that additional fees may apply when searches are conducted in primary source jurisdictions. Information is gathered from a wide range of public record sources, including state administrative offices of the courts, departments of corrections, pardon and parole boards, and hundreds of state and county-level repositories.

**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) |