adding mail objectClass to schema

[Darouichi, Aziz]

Hi all,


I am trying to create  groups within in Openldap-2.4.34  to use for  Gmail 
Active Directory Synch "GADs"  I formed the ldif file  with following 
attributes:

dn: cn=Google,ou=Group,dc=curry,dc=edu
objectclass: groupOfUniqueNames
cn:
mail:
description:
uniqueMember:
uniqueMember:


when I try to add  the file I get the following error:    adding new entry 
"cn=Google,ou=Group,dc=curry,dc=edu"
ldap_add: Object class violation (65)
        additional info: attribute 'mail' not allowed

Thanks.