Entries of this object class represent changes made to a directory server.
The set of changes made to a directory server
is given by the set of all entries in the changelog,
changeNumber is unique to a server,
and not necessarily shared or synchronized across servers.
The change numbers for ForgeRock servers can be synchronized
dsrepl reset-change-number command.
ForgeRock servers also provide an alternative
which can be used reliably across a replicated topology.
A client application may synchronize its local copy of directory data
by reading the server’s changelog for entries
changeNumber is greater than or equal to the last change
that the client read from the server.
A server can, however, trim its changelog.
If the last change read from the changelog is not returned in search results,
the client application must fall back to rebuilding
its entire copy of directory data.
STRUCTURAL: for structural specification of the DIT. Entries have only one structural object class superclass chain.