A character string used to identify and distinguish uniquely, one instance of an object in an identification scheme from all other objects within the same scheme.
| label | Identifier. Content | 
| Title | Identifier. Content | 
| definition | A character string used to identify and distinguish uniquely, one instance of an object in an identification scheme from all other objects within the same scheme. | 
| Description | |
| has internal identifier | Identifier. Content | 
| sample | |
| http://www.w3.org/ns/adms#versionNotes | |
| Is Part Of | UN/CEFACT CCL 13B |