# Limitations

> For the complete documentation index, see [llms.txt](https://doc.ibexa.co/en/saas/llms.txt).

Control access to parts of the system by fine-tuning permissions with the use of Limitations.

Limitations are part of the permissions system. They limit the access granted to users by [policies](https://doc.ibexa.co/en/saas/permissions/permission_overview/index.md). While a policy grants the user access to a function, Limitations narrow it down by different criteria.

Limitations consist of two parts:

- `Limitation` (Value)
- `LimitationType`

Certain limitations also serve as role limitations, which means they can be used to limit the rights of a role assignment. Currently, this covers [subtree of location](https://doc.ibexa.co/en/saas/permissions/limitation_reference/#subtree-limitation) and [Section](https://doc.ibexa.co/en/saas/permissions/limitation_reference/#section-limitation).

`Limitation` represents the value, while `LimitationType` deals with the business logic surrounding how it actually works and is enforced.

## Limitation reference

See [Limitation reference](https://doc.ibexa.co/en/saas/permissions/limitation_reference/index.md) for detailed information about individual limitations.