# Certn API Documentation

> Source: https://centric-api-docs.certn.co/#check-US_SSN_TRACE_1

### US Social Security Number (SSN) Trace

**US Social Security Number (SSN) Trace**

**Identifier:** `US_SSN_TRACE_1`

A US social security number (SSN) trace identifies names and addresses associated with a candidate's SSN. This search is used solely as an investigative tool and should not be used as the basis for hiring or tenancy decisions. Certn uses the address history and any alias or maiden names uncovered during this trace to help guide and enhance relevant criminal record searches, based on the screening package selected.

**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) |