The maps an identifier string to user entries by searching for the entry containing a specified attribute whose value is the provided identifier. For example, the username provided by the client for DIGEST-MD5 authentication must match the value of the uid attribute ds-cfg-exact-match-identity-mapper ds-cfg-identity-mapper org.opends.server.extensions.ExactMatchIdentityMapper Specifies the attribute whose value should exactly match the ID string provided to this identity mapper. At least one value must be provided. All values must refer to the name or OID of an attribute type defined in the directory server schema. If multiple attributes or OIDs are provided, at least one of those attributes must contain the provided ID string value in exactly one entry. The internal search performed includes a logical OR across all of these values. uid ds-cfg-match-attribute Specifies the set of base DNs below which to search for users. The base DNs will be used when performing searches to map the provided ID string to a user entry. If multiple values are given, searches are performed below all specified base DNs. The server searches below all public naming contexts. ds-cfg-match-base-dn