# Update a coupon

Source: https://developers.swell.is/backend-api/coupons/update-a-coupon

Update an existing coupon using the ID that was returned when created.

## Arguments

- `id` (objectId, required): Unique identifier for the coupon.
- `active` (boolean): Indicates the coupon is currently active. Note: this is not affected by `date_valid` and `date_expired`. Default: `false`.
- `date_expired` (date): Date the coupon is considered expired and no longer available for use. When defined, the coupon will not be valid after this date.
- `name` (string): A short descriptive name of the coupon.
- `codes` (array of Codes, required): Expandable list of codes used to identify the coupon.
- `currency` (string): Three-letter [ISO currency code](https://www.iso.org/iso-4217-currency-codes.html) in uppercase. Defaults to base currency.
- `date_valid` (date): Date the coupon is first available for use. When defined, the coupon will not be valid until after this date and before `date_expired`.
- `description` (string): A brief description of the coupon, as it may be displayed to customers.
- `discount_group` (string): ID of the discount group the coupon belongs to, if applicable, as defined in discount settings. Used to ensure only one set of discount rules can apply across a number of coupons and promotions.
- `discounts` (array of object, required): List of discount rules to apply.
  - `type` (enum): Type of discount to apply. Can be `total`, `product`, `category`, or `shipment`. Possible values: `total`, `shipment`, `product`, `category`, `buy_get`. Default: `"total"`.
  - `value_type` (enum, required): Type of discount amount to calculate. Can be `fixed` or `percent`. Possible values: `fixed`, `percent`. Default: `"fixed"`.
  - `value_fixed` (currency): Fixed discount applied when `value_type=fixed`.
  - `value_percent` (float): Percentage discount applied when `value_type=percent`.
  - `total_min` (currency): Minimum order total required for the rule to apply.
  - `discount_max` (currency): The maximum amount of a discount that can be redeemed.
  - `price_min` (currency): The minimum amount of a discount that can be redeemed.
  - `quantity_min` (int): Minimum product quantity required for the rule to apply, applicable for category and product discounts.
  - `quantity_max` (int): Maximum product quantity for which the rule will apply, applicable for category and product discounts.
  - `product_id` (objectId): ID of the product to discount, if applicable.
  - `variant_id` (objectId): ID of the variant to discount, if applicable.
  - `quantity_add` (int): Quantity of the product to add to cart, if applicable.
  - `shipment_service` (string): ID of the shipping service to discount, if applicable.
  - `category_id` (objectId)
  - `exclude_category_ids` (array of child_scalar)
  - `product` (product): Expandable link to the discounted product, if applicable.
  - `variant` (variant): Expandable link to the discounted variant, if applicable.
  - `category` (category): Expandable link to the discounted category, if applicable.
  - `exclude_categories` (exclude_categories): Expandable link to categories excluded from the promotion, if applicable.
  - `buy_items` (array of object): List of items that need to be purchased before the promotion becomes eligible.
    - `product_id` (objectId): ID of the product that is tied to the promotion eligibility, if applicable.
    - `product` (product): Expandable link to the promotion-eligible product, if applicable.
    - `category_id` (objectId): ID of the category that is tied to the promotion eligibility, if applicable.
    - `category` (category): Expandable link to the promotion-eligible category, if applicable.
  - `get_items` (array of object): List of items eligible for promotion after designated products have been purchased.
    - `product_id` (objectId): ID of the product to discount, if applicable.
    - `product` (product): Expandable link to the discounted product, if applicable.
    - `category_id` (objectId): ID of the discounted category, if applicable.
    - `category` (category): Expandable link to the discounted category, if applicable.
- `limit_account_groups` (array of child_scalar): List of customer account groups allowed to use the coupon.
- `limit_account_uses` (int): Maximum number of times the coupon can be used by each customer account.
- `limit_subscription_uses` (int): Maximum number of invoices the promotion may be applied to for a subscription.
- `limit_code_uses` (int): Maximum number of times each coupon code can be applied. Mainly used with multiple codes.
- `limit_uses` (int): Maximum number of times the coupon can be applied across all customers.
- `multi_codes` (boolean): Indicates the coupon is identified by multiple coupon codes. Default: `false`.
- `use_count` (int): Number of times the coupon has been used.

## Example request

`PUT /coupons/:id`

**cURL**

```bash
$ curl https://api.swell.store/coupons/60f199509111e70000000015 \
  -u store-id:secret-key \
  -d limit_uses=300 \
  -d active=true \
  -X PUT
```

**Node**

```javascript
const { swell } = require('swell-node');
swell.init('store-id', 'secret-key');

await swell.put('/coupons/{id}', {
  id: '60f199509111e70000000015',
  limit_uses: 300,
  active: true
});
```

**PHP**

```php
<?php $swell = new \Swell\Client('store-id', 'secret-key');

$swell->put('/coupons/{id}', [
  'id' => '60f199509111e70000000015',
  'limit_uses' => 300,
  'active' => true
]);
```

## Example response

```json
{
  "id": "60f199509111e70000000015",
  "name": "10% Off Winter Jacket Sale",
  "active": true,
  "codes": [
    {
      "code": "WINTER10"
    }
  ],
  "currency": "USD",
  "date_created": "2021-07-16T14:36:00.100Z",
  "date_expired": "2018-03-01T00:00:00.000Z",
  "date_updated": "2021-07-16T14:36:00.100Z",
  "date_valid": "2018-11-01T00:00:00.000Z",
  "description": "Save 10% on all Winter Jackets for a limited time only.",
  "discount_group": null,
  "discounts": [
    {
      "type": "category",
      "category_id": "5a97242bc65396a875c2d381",
      "value_type": "percent",
      "value_fixed": 10
    }
  ],
  "limit_account_uses": 3,
  "limit_code_uses": 10,
  "limit_uses": 300,
  "multi_codes": false,
  "use_count": 184
}
```