Define the unique identifier of the code.

Reference the component that uses this code.

Define the datatype of the code.

Define the short form of the datatype for the code.

Add the identifier (e.g. URI) and reference to the implementation of the code (e.g. a reference to the Javadoc of a Java code).

Specify the version of the component since when this code is valid.

Specify the version of the component since when this code is deprecated. 

Specify the last version of the component that supported this code.

Add references to information on external systems here.