# Limit discounts to customer groups

You can limit discount coupons and promotions to certain customer groups to create more engagement for **new or regular customers only**.

{% hint style="info" %}
If you don't yet have an app for Ecwid API access, start with the following [instructions](https://docs.ecwid.com/discounts-and-tips/customize-discounts/spaces/uOzT5egoVTAjMJwRuMQT/pages/IhHAmacGKQdbD0Fe0IUw#step-2.-get-your-first-application).
{% endhint %}

### Set customer groups for promotion

If you have an existing promotion, you can make it available to specific customer groups with the following API call:

```http
PUT /api/v3/STOREID/promotions/PROMOTIONID
Host: app.ecwid.com
Content-Type: application/json
Authorization: Bearer secret_token

{
    "triggers": {
        "customerGroups": [0, 1006534]
    }
}
```

where `customerGroups` is an array of customer group IDs ([find customer group ID](/api-reference/rest-api/customers/customer-groups/search-customer-groups.md)).

Learn more about customer groups in [Help Center](https://support.ecwid.com/hc/en-us/articles/207807105-Customer-groups).

Change `STOREID` with your store ID, `PROMOTIONID` with the promotion ID ([find promotion ID](/api-reference/rest-api/discounts/promotions/search-promotions.md)), and the `secret_token` with the secret access token of your app.

### Set customer groups for discount coupon

If you have an existing discount coupon, you can limit its usage to **new or regular customers only** with the following API call:

```http
PUT /api/v3/STOREID/discount_coupons/DISCOUNTCOUPONID
Host: app.ecwid.com
Content-Type: application/json
Authorization: Bearer secret_token

{
    "applicationLimit": "NEW_CUSTOMER_ONLY"
}
```

where `applicationLimit` must be one of:

* `UNLIMITED` - no user application limits (use it to remove the limitation).
* `NEW_CUSTOMER_ONLY` - discount coupon can be applied only by customers without placed orders. Unique customers are defined by the email they enter at the checkout.
* `REPEAT_CUSTOMER_ONLY` - discount coupon can be applied only by customers who placed orders in the store before. Unique customers are defined by the email they enter at the checkout.

Change `STOREID` with your store ID, `DISCOUNTCOUPONID` with the discount coupon ID ([find discount coupon ID](/api-reference/rest-api/discounts/discount-coupons/search-discount-coupons.md)), and the `secret_token` with the secret access token of your app.


---

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