---
title: "Create Document Authentication"
method: POST
path: "/v1/clients/{clientId}/verifications (DocumentAuthentication)"
tags: ["Document Authentication"]
---

# Create Document Authentication

`POST /v1/clients/{clientId}/verifications (DocumentAuthentication)`

Use this endpoint to create a Document Authentication case with the `clientId` from a previous successful Identity Verification case. <br /><br /><img src="https://files.readme.io/310d4d3-Inline_Caution.svg" align="left" alt="Important" /> **Important:** Before using this endpoint, see the <a href="https://docs.fourthline.com/docs/docauth-integration-api">integration guide</a>.

## Path parameters

- `clientId` string, required

## Headers

- `Authorization` string, required — The `access_token` returned in your most recent [Create access token](https://docs.fourthline.com/reference/create-access-token) response.

## Request body

- object
  - `providerProcessId` string, required — Your unique identifier for the case. <br /><br /><img src="https://files.readme.io/8eb9022-Inline_Tip.svg" align="left"/> **Tip:** To create multiple cases for the same `clientId`, you must specify a unique `providerProcessId` for each separate case.
  - `processType` string, required — The case type: `ClientConfirmation`= Biometric Authentication case
  - `branch` string — Your configuration for this product. <br />Set the string provided by your Fourthline delivery manager.<br />If **not** set, we use your default configuration. <br /><br /><img src="https://files.readme.io/8eb9022-Inline_Tip.svg" align="left"/> **Tip:** Use this parameter for case configuration in older setups.

## Response `201`

Document authentication case created

- object
  - `verificationId` string — Our unique identifier for the case. <br /><br />Format: uuid string <br /><br />Example: `790f325a-48c9-4b82-bb53-c0ea128236f0` <br />Validations: uuid format, `verificationId` exists <br />Errors: Format is incorrect or doesn’t exist
  - `providerProcessId` string — Your unique identifier for the case.
  - `status` string — The [case status](https://docs.fourthline.com/docs/docauth-statuses).

## Other responses

- `400` — Invalid request parameters
- `404` — Document authentication case not found
- `422` — The request could not be processed

---

[API](https://skmtc.net/fourthline/apis/fourthline-apis.md) · [All operations](https://skmtc.net/fourthline/apis/fourthline-apis/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/fourthline/fourthline-apis/versions/7991ae7c8383/schema)