Allows the implementer to extend the base HR-XML specification.
This is done by defining the additional information in XML Schema and referencing the new schema in the xml instance document throught the use of namespaces. Once this is done the additional information defined there can be carried in the BOD XML instance document.

UNDT000011-SC2
SC
Identification Scheme. Identifier
The identification of the identification scheme.
Identification Scheme
Identification
Identifier
string

UDT0000011-SC7
SC
Identification Scheme Data. Uniform Resource. Identifier
The Uniform Resource Identifier that identifies where the identification scheme data is located.
Identification Scheme Data
Uniform Resource Identifier
Identifier
string
anyURI

UNDT000011-SC4
SC
Identification Scheme Agency. Identifier
The identification of the agency that maintains the identification scheme.
Identification Scheme Agency
Identification
Identifier
string
Defaults to the UN/EDIFACT data element 3055 code list.