Catalog mode supports NDOs created containing catalog and catalog status information in any character encoding set. The default encoding for the XML documents created by the e-ADK is UTF-8 (Unicode). The user can select the encoding of the created XML documents by setting the configuration key Adapter.Serializer.Output.Encoding to the desired target encoding set. The user should be warned of two things. First, XML parsers tend to support a limited number of character encoding sets but almost universally support UTF-8. Make sure the target encoding set for the created XML documents is supported by the consuming XML parser. Second, the e-ADK does not throw an error when problems occur in transcoding data. If a character in the source NDO cannot be converted to the target encoding set, it will be replaced with a fill character.