alist of the representation formats supported by the service. Example: text/html, text/xml, application/json the version or release identifier of the service the default format used by the service unless otherwise specified the set of namespaces recognized by this service. Because many namespace identifiers tend to be cryptic (i.e. HL7 OIDs, BioPortal URL's, etc.), <i>knownNamespace</i> includes the namespace name, an optional URI \emph{and} a place to provide textual detail describing what the namespace references. Note that namespace names must be unique across an entire CTS2 implementation - the same namespace name cannot represent one namespace in code system A and a second in code system B. Note also that namespace names are \emph{local} to a service instance. Information that is communicated between service instances, recorded in data tables or client software \emph{must} use full URIs. a reference to the individual or organization that provides the service. the set of service profiles that are supported by this service implementation a description of the service, its use, etc. a short name that identifies the particular service and implementation the particular implementation type(s) supported by this profile Determine whether a <i>MapEntry</i> exists for the supplied entity.Determine whether a catalog entry exists that has an <i>about</i> or <i>alternateId</i> that matches the supplied URI or that has a <i>codeSystemName</i> that matches the supplied name that is (was) applicable in the supplied <i>context.</i> The supplied namespace name is not one that is known to the service. The named <i>mapVersion</i> is not recognized by the service The <i>referenceLanguage</i> is not supported by the service The change set specified could either not be read or located by the service. The <i>changeSetContext</i> is recognized by the service, but its state is not <i>OPEN</i>. One or more <i>changeSetContext</i> is not supported by the service Read the <i>MapEntry</i> that corresponds to the supplied <i>sourceEntity</i> The supplied namespace name is not one that is known to the service. The <i>EntityNameOrURI</i> is not known to the service The named <i>mapVersion</i> is not recognized by the service The supplied <i>fromEntry</i> is not associated with any <i>MapEntry</i> in the referenced <i>MapVersion.</i> The <i>referenceLanguage</i> is not supported by the service The change set specified could either not be read or located by the service. The <i>changeSetContext</i> is recognized by the service, but its state is not <i>OPEN</i>. One or more <i>changeSetContext</i> is not supported by the service A service providing direct access to entries in map versions.