Entry addition conflict

["Wesley Hobbie" <wslyhbb@yahoo.com>]

So far I only migrated the /etc/passwd file into the LDAP server, now I want to migrate the /etc/group file.
However, I created the group.ldif file, but when I tried to added it I get the following error:
 
ldapadd -x -D "cn=Manager,dc=personal-pc,dc=com" -W -f /etc/openldap/group.ldif
Enter LDAP Password:
adding new entry "cn=root,ou=Group,dc=personal-pc,dc=com"
ldapadd: update failed: cn=root,ou=Group,dc=personal-pc,dc=com
ldap_add: No such object (32)
        matched DN: dc=personal-pc,dc=com

 

cn=root,ou=Group,dc=personal-pc,dc=com LDIF entry:
dn: cn=root,ou=Group,dc=personal-pc,dc=com
objectClass: posixGroup
objectClass: top
cn: root
userPassword: {crypt}x
gidNumber: 0
memberUid: wslyhbb

 

dc=personal-pc,dc=com entry:
dn: dc=personal-pc,dc=com
objectClass: dcObject
objectClass: organization
objectClass: top
o: PersonalPC
dc: personal-pc
description: PersonalPC

 

What is wrong and how can I fix it?