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18.6. How Directory Server Handles ACIs in a Replication Topology

ACIs are stored in aci attributes of entries. Therefore, if an entry containing ACIs is part of a replicated database, the ACIs are replicated.
ACIs are always evaluated on server that resolves the incoming LDAP requests. When a consumer server receives an update request, it returns a referral to the supplier server before evaluating whether the request can be serviced on the supplier.