Think i found a way to change it. For documentation purpose if someone else has this
problem:
In /etc/ipa/default.conf i found our ldap_uri
Then issued this commands:
#verify correct dn
ldapsearch -b 'cn=DOMAIN.LOCAL_new_range,cn=ranges,cn=etc,dc=domain,dc=local'
ldapmodify -H ldapi://%2Frun%2Fslapd-DOMAIN-LOCAL.socket
dn: cn=DOMAIN.LOCAL_new_range,cn=ranges,cn=etc,dc=domain,dc=local
changetype: modify
add: ipabaserid
ipabaserid:500000
commit with enter on an empty line.
Did the same for
add: ipasecondarybaserid
ipasecondarybaserid:503000
Now "ipa config-mod --enable-sid --add-sids" did run successful. Let's hope
the auth problems are fixed too =)
Thanks for your time and help!