[Samba] Samba 4.6.2 idmap error testparm -v

[Periko Support]

Hi guys.

I had migrate samba  PDC with LDAP as backend:

Version 3.6.23-13.el5_11
Centos 6.x.

To Centos 7.x with samba 4.6.2

But got some errors related to idmap went I run testparm:

idmap range not specified for domain '*'
ERROR: Invalid idmap range for domain *!

This are my settings right on my extend file running testparm -v

ldap idmap suffix = ou=Idmap
idmap backend = tdb
idmap cache time = 604800
idmap gid =
idmap negative cache time = 120
idmap uid =
idmap config * : backend = tdb

Exist a way to now which are the right settings or this message won't
affect my setup?

Other thing I notice, If my backend is LDAP is normal that the
settings say 'tdb' insted of LDAP?

Thanks for your time!!!