This topic provides additional information about the impact of selecting or clearing the Translate this document only check box in the Start Translation dialog.
The 'Translate this document only' option is not appropriate for this document, because it references untranslated documents: DITA > Translation Testing > Approval2 > topic6.dita These referenced documents must be translated too; to do this, Start Translation again and do not check the 'Translate this document only' option.