+ Debug( LDAP_DEBUG_SYNC, "slap_queue_csn: queing %p %s\n", csn->bv_val, csn->bv_val, 0 );
+
+ ldap_pvt_thread_mutex_lock( &be->be_pcl_mutex );
+
+ ber_dupbv( &pending->ce_csn, csn );
+ ber_bvreplace_x( &op->o_csn, &pending->ce_csn, op->o_tmpmemctx );