> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gr4vy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Vault Forward card data from a checkout session

Use a Vault Forward with a checkout session and Secure Fields when you want to collect a CVV for a stored card, or forward card data without first creating a payment method.

## Forward CVV for a stored card

To forward a security code (CVV) for a stored card, create a checkout session and use it with Secure Fields to collect the security code. See the [Secure Fields guide for stored cards](/guides/payments/secure-fields/stored-cards) for the collection flow.

Once the security code has been collected, forward the card details using the checkout session as shown below.

## Forward a checkout session

To forward a checkout session, set the `x-vault-forward-checkout-session` header instead of `x-vault-forward-payment-methods`. The `CARD_SECURITY_CODE_1` placeholder is then available in the request body.

<CodeGroup>
  ```http Original request theme={"system"}
  POST /vault-forward
  host: api.acme.gr4vy.app
  content-type: application/json
  x-vault-forward-url: https://example.com/endpoint
  x-vault-forward-http-method: PUT
  x-vault-forward-header-authorization: Bearer 123
  x-vault-forward-checkout-session: b77fef6d-c360-4b42-8f70-d884f4a6852a
  x-vault-forward-timeout: 10

  {
      "cards": [
          {
              "number": "{{ CARD_NUMBER_1 }}",
              "expiry": "{{ CARD_EXPIRATION_DATE_1 }}",
              "cvv": "{{ CARD_SECURITY_CODE_1 }}"
          }
      ]
  }
  ```

  ```http Forwarded request theme={"system"}
  PUT /endpoint
  host: example.com
  content-type: application/json
  authorization: Bearer 123

  {
      "cards": [
          {
              "number": "4111111111111111",
              "expiry": "12/25",
              "cvv": "123"
          }
      ]
  }
  ```
</CodeGroup>

<Warning>
  Only one checkout session can be provided per Vault Forward request, so all placeholders use the `_1` index.
</Warning>

For the full list of supported headers and card placeholders, see [Forward to endpoint](./forward).

<Card title="3DS forwarding" icon="shield-check" href="/guides/features/vault-forwarding/3ds">
  Forward 3DS authentication data alongside card details using checkout sessions
</Card>