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# Identify legacy custom fields on a standard object

> Learn how to distinct legacy custom fields from advanced custom fields on standard objects.

Learn how to distinct legacy custom fields from advanced custom fields on standard objects.

Navigate to **Object manager entry** in the left navigation menu.

In the **Objects** tab, locate the standard object you want to view and click the object name in the Label column to open the object detail page. Zuora lists all custom fields in the **Custom Fields** tab on the object detail page. If the value in the Legacy column is **true**, the custom field is a legacy custom field. Otherwise, it is an advanced custom field.