# Why are Roles so Important?

Since the introduction of ACL, it is particularly important to assign newly created users to a tenant immediately. A user without an assigned tenant cannot see anything or perform any actions in BuildingPro Suites.

{% hint style="info" %}
Find out [-> here ](https://docs.buildings.ability.abb/collection/mandatory-base/platform-core/workspace-and-identity/users/assign-a-user-to-a-tenant)how to assign a user to a tenant.
{% endhint %}

### Why is that?

If a user is not assigned to a tenant, no tenant role applies to that *user*.

If no tenant role applies to a user, only the settings of the system role apply.

The default system role for every new user is "System User." This role has no read permission.

Therefore, a user with the "System User" system role cannot see any menu items or perform any actions.

<div data-full-width="true"><figure><img src="https://3489494878-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9GvUpaatBiReR43XFSMg%2Fuploads%2FhVX3wRBa95UlyiFWSv0P%2FBildschirmfoto%202023-10-26%20um%2010.14.54.png?alt=media&#x26;token=392b6fc7-edf4-4874-ae85-1a1a1bf032ce" alt=""><figcaption><p>Fig. 1 – This is what a user sees who is not assigned to a tenant. The entire menu bar is empty, and no actions can be performed</p></figcaption></figure></div>