When you specify a value for Fixed Value
, it is optional for the element to appear in an instance document. However, if the element does appear, it must have the value specified by Fixed Value
. Whether or not you specify this element in an instance document, the schema processor behaves as though you had specified this element with the fixed value. An element can have a value for the Fixed Value
property or a value for the Default
property. The two properties are mutually exclusive.