---
title: "Bank Account Verification Webhooks"
method: POST
path: "/bav/{paymentId}"
tags: ["Webhooks"]
---

# Bank Account Verification Webhooks

`POST /bav/{paymentId}`

## Request

- Base URL: `https://mysite.com/api/fourthline`
- URL: `https://mysite.com/api/fourthline/bav/{paymentId}`
- Auth: OAuth 2
  - Client credentials
  - Token URL: `https://example.com/token`

Webhook notifications for <a href="https://docs.fourthline.com/docs/bav-overview">Bank Account Verification</a>. For setup and authentication, see <a href="https://docs.fourthline.com/docs/webhooks">Webhooks</a>.

## Path parameters

- `paymentId` string, required

## Headers

- `Authorization` string, required

## Request body

- object
  - `clientId` string, required: Our unique identifier for the client. <br /><br />Format: uuid string <br /><br />Example: `790f325a-48c9-4b82-bb53-c0ea128236f0` <br />Validations: uuid format, `clientId` exists
  - `paymentId` string, required: Our unique identifier for the reference payment. <br /><br />Format: uuid string <br /><br />Example: `790f325a-48c9-4b82-bb53-c0ea128236f0` <br />Validations: uuid format, `paymentId` exists <br />Errors: Format is incorrect or doesn’t exist
  - `status` 'failed' | 'pending', required: The [payment status](https://docs.fourthline.com/docs/bav-statuses). <br />Validation: Valid enum value <br />Errors: Invalid enum value.
  - `message` string: The [status code](https://docs.fourthline.com/docs/bav-statuses#status-codes).

## Response `200`

Return HTTP 2xx to acknowledge receipt. See [Handle webhook deliveries](https://docs.fourthline.com/docs/webhooks#200-ok).

- object: A successful response is empty.

## Other responses

- `401`: Fourthline could not authenticate with your webhook endpoint. See [troubleshooting](https://docs.fourthline.com/docs/webhooks#401-unauthorized).
- `403`: Fourthline could not authenticate with your webhook endpoint. See [troubleshooting](https://docs.fourthline.com/docs/webhooks#403-forbidden).
- `404`: Fourthline can reach your server, but the webhook endpoint could not be found. See [troubleshooting](https://docs.fourthline.com/docs/webhooks#404-not-found).
- `500`: Your server received the request but could not process it successfully. See [troubleshooting](https://docs.fourthline.com/docs/webhooks#500-internal-server-error).

---

[API](https://skmtc.dev/fourthline/apis/webhooks.md) - [All operations](https://skmtc.dev/fourthline/apis/webhooks/llms.txt) - [OpenAPI document](https://skmtc.dev/fourthline/apis/webhooks/revisions/4df6bbbf587c?raw)