Problem with Chain Overlay

[Stefano <stefano.elmopi@sociale.it>]

Hi,

I state that I am a beginner to Ldap !!!
I have a problem with the configuration of the Chain Overlay.
Provider and Consumer are identical

CentOS release 6.5
openldap-servers-2.4.40-1.el6.x86_64

On the Consumer:
I configured

olcPPolicyForwardUpdates=TRUE  			in the Ppolicy Overlay and
olcUpdateRef: ldap://stfalf02devpom.sociale.it	in the ldif file of Ldap DB

imported the ldif file:

dn: olcOverlay=chain,olcDatabase={1}sociale,cn=config
objectClass: olcOverlayConfig
objectClass: olcChainConfig
olcOverlay: chain
olcChainCacheURI: FALSE
olcChainMaxReferralDepth: 1
olcChainReturnError: FALSE

created the directory 

/usr/local/openldap/etc/openldap/slapd.d/cn=config/olcDatabase=
{1}sociale/olcOverlay={4}chain

and imported the ldif file:

dn: olcDatabase=ldap,olcOverlay={4}chain,olcDatabase={1}sociale,cn=config
objectClass: olcChainDatabase
objectClass: olcConfig
objectClass: olcDatabaseConfig
objectClass: olcLDAPConfig
olcDatabase: ldap
olcDbIDAssertBind: 
  bindmethod=simple
  
binddn="uid=selmopi,ou=admin_esercizio,ou=Utenze,ou=Amministratori,dc=socia
le,dc=it"
  credentials=strofinella
  mode=self
olcDbURI: ldap://stfalf02devpom.sociale.it


All operations were successful but the overlay does not work and does not 
know why, there are no errors in the logs !!!
Help, I do not know where to turn !!!
Thanks


Best Regards
Stefano