I'm trying do add a new user federation provider for integrate keycloak with a ldap server.

The parameters:
Console display name -> Active Directory
Priority -> 0
Edit Mode -> READ_ONLY
Sync Registrations -> OFF
Vendor -> Active Directory
Username LDAP attribute -> sAMAccountName
User Object Classes -> person, organizationPerson, user
Connection URL -> ldap://dom.example.com:389
Base DN -> DC=dom,DC=example,DC=com
User DN Suffix -> CN=Users
Bind DN -> CN=Keycloak.LDAP;CN=Users;DC=dom,DC=example,DC=com
Bind Credential -> ********
Connection pooling -> ON
Pagination -> ON
Enable Account After Password Update -> OFF
Batch Size -> 100
Periodic Full Sync -> OFF
Periodic changed users sync -> ON
Changed users sync period -> 86400

I tried change User DN Suffix to only Users, but it not works. The log always saying:
LDAP: error code 1 - 000020D6: SvcErr: DSID-031007DB, problem 5012 (DIR_ERROR)
And it says this when it tries to parse the User DN Suffix.

Theres something wrong with my conf?