Best use of LDAP in UCS: Schema Extensions for Adding Attributes & New Object Types
The LDAP server in UCS, like the Active Directory on a Windows server, stores all the information on your domain about all your resources from hardware to employee as objects, namely in a structured and well-defined manner. Every object has some defined attributes of a particular type. Common attributes of a user object are, for example, the user’s surname, password and further valuable information on him. Part of the LDAP is the LDAP schema, which provides the administrator with a clear overview on all objects by describing which types of attributes exist within the LDAP and what attributes they have.
So, if you want to include additional attributes or create entirely new object types, extending the schema might be the way to go.