Google Apps Directory Sync Administration Guide - Manual (Page 79)

Configuration 79
Additional User Attributes
LDAP Extended Attributes are optional LDAP attributes that you can use to import
additional information about your Google Apps users, including passwords.
All attributes are optional. If you do not specify an attribute, Directory Sync will not
import this information.
LDAP Extended Attribute
Setting
Description
Given Name Attribute(s) An LDAP attribute that contains each user’s
given name. (In the English language, this is
usually the first name.)
This is synchronized with the user’s name in
Google Apps.
You can also use multiple attributes for the
given name. If you use multiple attributes,
place each attribute field name in square
brackets.
Examples: givenName,[cn]-[ou]