# Invoicing

Ratepay will send invoice documents to your customers on behalf of you. In case you like to create and send the invoice documents on your own, please follow our [legal instructions](/docs/legal/a_legal_requirements_for_the_integration/customer_correspondences/customer_correspondences/).

To submit the invoice id you need to create an invoice document in advance of the capture notification.

![](/assets/manage-transactions6.cef0f788a7623f302d8f667982c5f02d74296b149aab2aae698a29a506217d6a.e39bad5d.png)

## Where to find the Ratepay identifiers in Shopware?

### Database

| Identifier | Table | Column |
|  --- | --- | --- |
| Reason for payment / narrative / Verwendungszweck | `ratepay_order_data` | `descriptor` |
| Transaction ID | `ratepay_order_data` | `transaction_id` |


### Shopware 6 REST API

1. Request a Bearer token for your Shopware 6 REST API via `POST` to the URL https://{YOUR_DOMAIN}/api/oauth/tokenPayload example:



```json
{
	"client_id": "administration",
	"grant_type": "password",
	"scopes": "write",
	"username": "<user-username>",
	"password": "<user-password>"
}
```

1. Insert the Bearer token into your headers and search for your order via `POST` to the URL https://{YOUR_DOMAIN}/api/search/orderPayload example:



```json
{
    "filter": [
        {
            "field": "orderNumber",
            "type": "equals",
            "value": "12345"
        }
    ],
    "associations": {
        "ratepayData": []
    }
}
```

The response with the Ratepay details, which e. g. contains the `descriptor`, will look like that:


```json
{
	...
    "included": [
		...
        {
            ...
            "type": "ratepay_order_data",
            "attributes": {
                ...
                "transactionId": "51-20230703235702264",
                "descriptor": "KA0058597N5",
                ...
            },
			...
        },
		...
    ],
	...
}
```