# Invoice

Apart from payment gateways, Emporix supports **invoice (post-checkout)** as a payment mode. This is common in B2B flows, for example net terms.

Invoice is configured through the Payment Gateway Service API.

{% hint style="info" %}
Invoice does **not** collect the actual funds. You invoice the customer outside of Emporix.
{% endhint %}

### Create the invoice payment mode

Create an `invoice` payment mode with `POST /payment-gateway/{TENANT}/paymentmodes/config`. For the full endpoint reference, see [Payment modes configuration](https://developer.emporix.io/api-references/api-guides/checkout/payment-gateway/api-reference/payment-mode).

#### Example request

```bash
curl --location --request POST 'https://api.emporix.io/payment-gateway/{{TENANT}}/paymentmodes/config' \
--header 'Content-Type: application/json' \
--header 'Accept: application/json' \
--header 'Authorization: Bearer {EMPORIX_AUTH_TOKEN}' \
--data-raw '{
  "code": "invoice",
  "active": true,
  "provider": "INVOICE",
  "configuration": {}
}'
```

#### Payload notes

* `code`: Your storefront uses this as the method identifier (for example `invoice`).
* `provider`: Must be `INVOICE`.
* `configuration`: Empty for invoice.

### What to do next

After configuration, the mode shows up in `GET /payment-gateway/{TENANT}/paymentmodes/frontend`. Use that list to render available payment options in your storefront.