# Reusing the payment source

## Problem

You want to save a Klarna payment source already used to complete a purchase into the customer wallet and eventually reuse it for future payments.

## Solution

1. To save the payment source into the customer wallet you need to ensure that the `auth_token` is already set, then send a `PATCH` request to the `/api/orders/:id` endpoint, setting the `_save_payment_source_to_customer_wallet` attribute to `true`.
2. To reuse the stored payment source you need to associate it with the related order. To do that send a `PATCH` request to the `/api/orders/:id` endpoint, using the ID of the selected customer payment source to properly set the `_customer_payment_source_id` attribute.

{% hint style="info" %}
To get a list of the customer's available payment sources, include the `available_customer_payment_sources`relationship in the [request (1)](#1.-save-the-payment-source-into-the-customer-wallet).
{% endhint %}

### Example

#### 1. Save the payment source into the customer wallet

{% tabs %}
{% tab title="Request" %}
The following request save the Klarna payment source to the customer wallet for the order identified by the "qaMAhZkZvd" ID:

```javascript
curl -g -X PATCH \
  'http://yourdomain.commercelayer.io/api/orders/qaMAhZkZvd?include=available_customer_payment_sources' \
  -H 'Accept: application/vnd.api+json' \
  -H 'Authorization: Bearer your-access-token' \
  -H 'Content-Type: application/vnd.api+json' \
  -d '{
  "data": {
    "type": "orders",
    "id": "qaMAhZkZvd",
    "attributes": {
      "_save_payment_source_to_customer_wallet": true
    }
  }
}'
```

{% endtab %}

{% tab title="Response" %}
On success, the API responds with a `200 OK` status code, returning the updated order object:

```javascript
{
  "data": {
    "id": "qaMAhZkZvd",
    "type": "orders",
    "links": {
      "self": "https://yourdomain.commercelayer.io/api/orders/qaMAhZkZvd"
    },
    "attributes": {...},
    "relationships": {
      "market": {
        "links": {...}
      },
      "customer": {
        "links": {...}
      },
      "shipping_address": {
        "links": {...}
      },
      "billing_address": {
        "links": {...}
      },
      "available_payment_methods": {
        "links": {...}
      },
      "available_customer_payment_sources": {
        "links": {...},
        "data": [
          {
            "type": "customer_payment_sources",
            "id": "QgDXpwsqDx"
          }
        ]
      },
      "payment_method": {
        "links": {...}
      },
      "payment_source": {
        "links": {...}
      },
      "line_items": {
        "links": {...}
      },
      "shipments": {
        "links": {...}
      }
    },
    "meta": {
      "mode": "test"
    }
  },
  "included": [
    {
      "id": "QgDXpwsqDx",
      "type": "customer_payment_sources",
      "links": {
        "self": "https://yourdomain.commercelayer.io/api/customer_payment_sources/QgDXpwsqDx"
      },
      "attributes": {
        "customer_token": "1",
        "name": "XXXX-XXXX-XXXX-1111",
        "payment_source_token": "7RxGd2HUyY1Yc2Tghw5N453piFs",
        "created_at": "2018-01-01T12:00:00.000Z",
        "updated_at": "2018-01-01T12:00:00.000Z",
        "reference": null,
        "metadata": {}
      },
      "relationships": {
        "customer": {
          "links": {...}
        },
        "payment_source": {
          "links": {...}
        }
      },
      "meta": {
        "mode": "test"
      }
    }
  ]
}
```

{% endtab %}
{% endtabs %}

#### 2. Reuse the payment source stored in the customer wallet

{% tabs %}
{% tab title="Request" %}
The following request associates the payment source saved into the customer wallet and identified by the ID "QgDXpwsqDx" with the order identified by the "qaMAhZkZvd" ID:

```javascript
curl -g -X PATCH \
  'http://yourdomain.commercelayer.io/api/orders/qaMAhZkZvd' \
  -H 'Accept: application/vnd.api+json' \
  -H 'Authorization: Bearer your-access-token' \
  -H 'Content-Type: application/vnd.api+json' \
  -d '{
  "data": {
    "type": "orders",
    "id": "qaMAhZkZvd",
    "attributes": {
      "_customer_payment_source_id": "QgDXpwsqDx"
    }
  }
}'
```

{% endtab %}

{% tab title="Response" %}
On success, the API responds with a `200 OK` status code, returning the updated order object:

```json
{
  "data": {
    "id": "qaMAhZkZvd",
    "type": "orders",
    "links": {
      "self": "https://yourdomain.commercelayer.io/api/orders/qaMAhZkZvd"
    },
    "attributes": {...},
    "relationships": {
      "market": {
        "links": {...}
      },
      "customer": {
        "links": {...}
      },
      "shipping_address": {
        "links": {...}
      },
      "billing_address": {
        "links": {...}
      },
      "available_payment_methods": {
        "links": {...}
      },
      "available_customer_payment_sources": {
        "links": {...}
      },
      "payment_method": {
        "links": {...}
      },
      "payment_source": {
        "links": {...}
      },
      "line_items": {
        "links": {...}
      },
      "shipments": {
        "links": {...}
      }
    },
    "meta": {
      "mode": "test"
    }
  }
}
```

{% endtab %}
{% endtabs %}

## More to read

See our documentation if you need more information on how to [update an order](https://docs.commercelayer.io/developers/v/api-reference/orders/update) or deal with [customer payment sources](https://docs.commercelayer.io/developers/v/api-reference/customer_payment_sources).


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.commercelayer.io/how-tos/placing-orders/payments/klarna/reusing-the-payment-source.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.