| AA | Type of authority |
| 1 | Ministry or any other national or federal authority |
| 2 | Armed forces |
| 3 | Regional or local authority |
| 4 | Utilities entity |
| 5 | European Institution/Agency or International Organisation |
| 6 | Body governed by public law |
| 8 | Other |
| 9 | Not applicable |
| N | National or federal Agency/Office |
| R | Regional or local Agency/Office |
| Z | Not specified |
