# Limit discounts by products and categories

You can limit the application of discount coupons and promotions to certain products and categories to create **product promos** or **category sales**.

{% 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 products and categories for promotion

If you have an existing promotion, you can make it affect only specific products and products from a specific category with the following API call:

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

{
    "targets": {
        "products": [102039482, 236754267],
        "categories": [0, 80056181]
    }
}
```

where `products` and `categories` are arrays of product and category IDs ([find product ID](/api-reference/rest-api/products/search-products.md), [find category ID](/api-reference/rest-api/categories/search-categories.md)).

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.

### Limit promotion by a specific product variation

You can also limit promotion by specific variation IDs to make offers like **10% off for XL blouses**:

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

{
    "targets": {
        "products": [102039482, 236754267],
        "combinations": [1006525572, 1086715627]
    }
}
```

where `combinations` is an array of product combination IDs ([find variation ID](/api-reference/rest-api/products/product-variations/search-product-variations.md)).

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 products and categories for discount coupon

If you have an existing discount coupon, you can make it work with specific products and products from a specific category 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

{
    "catalogLimit": {
        "products": [102039482, 236754267],
        "categories": [0, 80056181]
    }
}
```

where `products` and `categories` are arrays of product and category IDs ([find product ID](/api-reference/rest-api/products/search-products.md), [find category ID](/api-reference/rest-api/categories/search-categories.md)).

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.


---

# 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.ecwid.com/discounts-and-tips/customize-discounts/limit-discounts-by-products-and-categories.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
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