# Manage cart item filters
> You can create, edit, and delete cart item filters for your campaign in your campaign's Rule Builder.
> For the complete documentation index, see [llms.txt](https://docs.talon.one/llms.txt).
To create and manage cart item filters that you can use in more than one campaign of your Application,
see [Manage Application cart item filters][app-cif].
## Create a cart item filter
Create a cart item filter to use it in a given campaign.
For performance reasons, we recommend creating a maximum of four cart item filters per campaign.
To create a cart item filter:
1. On the left-side menu of your campaign, click **Rule Builder**.
1. In the top-right corner of the page, click **Cart Item Filters**.
:::tip
If a filter exists, in the **Cart Item Filters** section,
click **Add Filter**.
:::
1. (Optional) To begin your filtering from a cart item filter that was created earlier,
from **Start with this list of cart items**,
select one of the following:
- A filter you created earlier in the campaign.
- An [Application cart item filter][app-cif].
- A list of items from a [value map][value-map].
- All the items in the cart.
:::tip
This step can improve the performance of the campaign evaluation and
reduce the risk of making mistakes when creating filters from cart item lists.
:::
1. To add a filter, click **Add Filter Step**.
:::note
- Add as many filter steps as you need in the order you want to apply them.
- Only the filters that can be applied to the previous step are available for selection.
:::
1. From the list of [available cart item filters][avail-cif],
select a filter and define the required values.
1. In **Save As**, type a name for your filter. This name then appears in the **Rules** section
of the **Rule Builder**.
:::note
`Value_map_items` is a reserved name and cannot be used for naming a filter.
See [Manage a value map][value-map].
:::
1. Click **Save Filter**.
The cart item filter is created.
Additionally,
the following attributes
are available in the [Attribute Selector](/docs/product/rules/overview.md#attribute-selector):
-
-
- , if [cascading discounts](/docs/product/applications/manage-general-settings.md#cascading-discounts) are enabled.
:::tip
Cart item filters can also be created from a [blueprint](/docs/product/rules/blueprints.md).
:::
## Edit a cart item filter
To edit a cart item filter:
1. On the left-side menu of your campaign, click **Rule Builder**.
1. In the **Cart Item Filters** section, click the filter to edit.
1. Edit the required information.
:::note
- You cannot rename a filter marked .
This means it's used in a rule, another filter, or a [bundle definition][bundle-def].
- To add a filter step, click **Add Filter Step**.
To delete a filter step, to the right of the step, click .
:::
1. Click **Save Filter**.
## Delete a cart item filter
You can delete a cart item filter if it is not used in a rule, another filter,
or a [bundle definition][bundle-def].
To delete a cart item filter:
1. On the left-side menu of your campaign, click **Rule Builder**.
1. In the **Cart Item Filters** section, to the right of the
filter you want to delete, click .
## Related pages
- [Manage Application cart item filters][app-cif]
- [Create a discount using cart item filters](/docs/product/tutorials/coupons/cart-item-filters-discount.md)
- [Buy 3 and pay for 2](/docs/product/tutorials/coupons/buy-3-pay-2.md)
- [Evaluation order for rules and cart item filters](/docs/product/applications/evaluation-order-for-rules-and-filters.md)
- [Create and manage item bundles](/docs/product/rules/create-and-manage-bundles.md)
[app-cif]: /docs/product/applications/manage-application-cart-item-filters.md
[bundle-def]: /docs/product/rules/create-and-manage-bundles.md
[avail-cif]: /docs/product/rules/cart-item-filters/available-cart-item-filters.md
[value-map]: /docs/product/rules/manage-value-map.md