Kerberos openldap

[Thiago Gonzaga B. Galvão]

Hi guys,
I'm configuring a kerberos server to use an ldap server backend (openldap).

When I try to create the realm:

kdb5_ldap_util -D cn=krbadmin,ou=aplicacoes,dc=ouropreto,dc=ifmg,dc=edu,dc=br 
create -subtrees ou=pessoas,dc=ouropreto,dc=ifmg,dc=edu,dc=br -r CEFETOP.EDU.BR 
-s

Initializing database for realm 'CEFETOP.EDU.BR'
You will be prompted for the database Master Password.
It is important that you NOT FORGET this password.
Enter KDC database master key: 
Re-enter KDC database master key to verify:
create: realm object value:  No such entry in the database while creating realm 
'CEFETOP.EDU.BR'

what can be this. Can someone help me?

 thiago