# Discount items in specific positions

> Let's imagine that we want to issue a discount on a specific unit of an item with a given SKU. For example, if our business is an apparel store, we may want to issue a 50% discount on the second unit of a given shirt when customers use a specific coupon.

> For the complete documentation index, see [llms.txt](https://docs.talon.one/llms.txt).

This campaign can be useful to increase sales of certain items.

To issue discounts on specific items, let's use [cart item filters](/docs/product/rules/cart-item-filters/overview.md).

In a [standard campaign](/docs/product/campaigns/overview#standard-campaigns), let's
create:

1. A cart item filter to filter items by SKU.
1. A cart item filter to filter the units of the cart item with the selected SKU based on
   their position in the cart.
1. A [rule](/docs/product/rules/overview.md) to issue a discount on the second unit in the list.

:::note
Our campaign has the [_coupons_](/docs/product/campaigns/coupons/coupon-page-overview.md)
feature enabled.
:::

## Filter the cart items by SKU

Let's [filter the customer's cart](/docs/product/rules/cart-item-filters/manage-cart-item-filters.md)
by **SKU of item** to find all units of the item whose SKU is _10045_.

**Filter items by conditions**:

- Attribute is **SKU of item (Item)**.
- **Is equal to** `10045`.
- **Save as** `SKU1`.

To the right of the filter name, notice the type of value assigned to our filter. In this
case, it is **list of cart items**. This means that this filter can be used in any operation,
condition, or effect that work with lists.

## Filter the selected cart item units by position

Let's add a **Filter Step** to our first cart item filter to filter the units of the cart
item with the selected SKU by **position** and find the unit that appears second in the cart.

**Filter items by conditions**:

- Attribute is **Position of cart item in a stack (Item)**.
- **Is equal to** `1`.

To the right of the filter name, notice the type of value assigned to the filter: **list
of cart items**.

## Issue a discount on the selected unit

Let's [build a rule](/docs/product/rules/create-and-manage-rules.md#create-a-rule) to issue
a 50% discount on the second unit of the cart item with the selected SKU.

Let's name it `50% discount on the 2nd unit`. It has one condition and one effect.

### Condition

**Coupon code is valid**.

### Effect

**Discount individual items**:

- **List of items** is `SKU1`.
- **Discount name** is `50% off per item`.
- **Discount value** is <Attribute name="Item.Price" type="builtin" />`* 50%`.

## Related pages

- [Create a discount using cart item filters](/docs/product/tutorials/coupons/cart-item-filters-discount.md)
- [Manage cart item catalogs](/docs/product/account/dev-tools/manage-cart-item-catalogs.md)