Aug 21 01:42:45 slapd[4658]: null_callback : error code 0x10 Aug 21 01:42:45 slapd[4658]: syncrepl_entry: rid=107 be_modify failed (16) Aug 21 01:42:45 slapd[4658]: do_syncrepl: rid=107 rc 16 retrying (9 retries left) Master (OpenLDAP: slapd 2.4.17, 64bit openSUSE 11.2) and slave (OpenLDAP: slapd 2.4.31, 64bit openSUSE 12.2) master slapd.conf syncprov configuration : ....... overlay syncprov syncprov-checkpoint 100 10 syncprov-sessionlog 100 .......... slave master slapd.conf syncprov configuration: ................................... syncrepl rid=107 provider=ldaps://master.domen.com \ type=refreshOnly \ interval=00:00:02:00 \ scope=sub \ schemachecking=off \ searchbase="dc=domen,dc=com" \ bindmethod=simple \ binddn="dc=domen,dc=com" \ credentials=**** \ retry="60 10 300 10" ...................... I have these errors on all my slaves. What may be the cause of those errors? I have no idea about that. Please HELP!