"Copyright The HR-XML Consortium. All Rights Reserved. http://www.hr-xml.org" Name: IdentifierTypes.xsd Status: Recommendation Date this version: 2007-04-15 Purpose: Defines reusable identifier schema components. Author(s): Documentation: IdentifierTypes.html 2004-07-06: The EntityReferenceType was changed from a xsd:choice content model to a xsd:sequence content model. This is considered a backwardly compatible bug fix. 2005-11-08: DunsNumberType data type renamed to DunsNumberDataType. This was done so there is not a type and an attribute with the same name (and only cased different). Code gen tools can be case insensitive and so this would create a collision. Terms of license can be found in license.txt.