Ensure that any attributes that are part of the new object class are defined before defining the object class.
To create a new object class:
  1. Start the Administrative Console.
  2. From the main menu, select LDAP Schema.
  3. On the Schema Editor, click the Object Classes tab, and then click New.
  4. Enter the properties for the new object class.
  5. In the Attributes box, filter the types of attributes required for the new object class. Click the right arrow to move it into the Required or the Optional box.

    All custom attributes appear at the bottom of the list in the Attributes box.