| United Nations Economic Commission for Europe Trade Data Elements Directories UNTDED |
| 0068 | Common access reference |
| UN/EDIFACT | Description | Reference serving as a key to relate all subsequent transfers of data to the same business case or file | Representation | an..35 | Standards | ISO 9735 | Note | Partners may in their interchange agreement specify a logical division of the reference data but EDIFACT syntax separators may not be used. |