---
title: replicaIdentifier
description: Uniquely identifies a replica in a topology.
component: pingds
version: 8.1
page_id: pingds:schemaref:at-replicaIdentifier
canonical_url: https://docs.pingidentity.com/pingds/8.1/schemaref/at-replicaIdentifier.html
---

# replicaIdentifier

Uniquely identifies a replica in a topology.

|                             |                                                                |
| --------------------------- | -------------------------------------------------------------- |
| *OID*                       | 1.3.6.1.4.1.42.2.27.9.1.724                                    |
| *Names*                     | replicaIdentifier                                              |
| *Description*               | the OpenDS replication domain server identifier for the change |
| *Syntax*                    | [DirectoryString](s-DirectoryString.html)                      |
| *Equality matching rule*    | [caseIgnoreMatch](mr-caseIgnoreMatch.html)                     |
| *Ordering matching rule*    | [caseIgnoreOrderingMatch](mr-caseIgnoreOrderingMatch.html)     |
| *Substring matching rule*   | [caseIgnoreSubstringsMatch](mr-caseIgnoreSubstringsMatch.html) |
| *Single value*              | true                                                           |
| *User modification allowed* | true                                                           |
| *Usage*                     | directoryOperation                                             |
| *Origin*                    | OpenDS Directory Server                                        |
| *Schema file*               | 03-changelog.ldif                                              |