Codes are usually reserved for former countries , overseas territories , international organizations , and special nationality status -LRB- for their respective reserved codes , see the sections Reserved code elements in ORGANIZATION@1 NUMBER@1 alpha-2 and ORGANIZATION@1 NUMBER@1 alpha-3 ; there are no reserved numeric codes in ORGANIZATION@1 NUMBER@1 -RRB- .

Usually , obsolete codes may be kept as reserved , while some overseas territories , international organizations , and special nationality status have reserved codes of their own . See the corresponding sections in ORGANIZATION@1 NUMBER@1 alpha-2 and ORGANIZATION@1 NUMBER@1 alpha-3 for their respective reserved codes -LRB- ISO NUMBER@1 numeric does not have reserved codes -RRB- .
