# Editing custom fields

> Edit the definition of an existing custom field without affecting values already assigned to objects.

Change the definition of a custom field.

## Context

Any changes that you bring to the definition of a custom field don't affect existing assignments. Specifically, when you change the definition, the field name and values, which are already set on objects, remain unchanged.

## Prerequisites

* Only Administrators can create and configure custom fields.

## Steps

1. Open your project in Test Manager.
2. Navigate to **Project Settings** and then to **Custom field definitions**.
3. Select **More Options** for a custom field, and then **Edit**.
   :::note
   * You can't select a custom field to support an object type if another custom field with the same name already supports that type. For instance, if you have a custom field named **Priority**, which can be assigned to **Requirements** and **Test cases**, then a custom field with the same name can only be assigned to the remaining object type, which is **Test sets**.
   * For custom fields of type **Label**, you can only add or remove possible values, but not rename the existent ones.
   :::
4. Change the configuration and select **Save** to confirm.

## Result

The custom field definition reflects your changes.