This schema module was created to allow the updating of enumerations and SimpleTypes within their own namespace inpedendnetly of the main schema modules. Enumeration Facets Enumeration for what type of data is contained in a Resource or ResourceLink Pattern Facets ISO 639-2/T language code type restricting to length of 3 and lower case letters ISO 3166-1country code type restricting to length of 2 and upper case letters ISO 4217 currency code type restricting to length of 3 and upper case letters ISO 10383 Market Identifier Code type restricting to length of 4 and upper case letters