| 32004L0017 - Utilities (3rd generation) | Article 53.7 |
| 7. A written record of qualified economic operators shall be kept; it may be divided into categories according to the type of contract for which the qualification is valid. |
| 31993L0038 - Utilities (2nd generation) | Article 30.7 |
| 7. A written record of qualified suppliers, contractors or service providers shall be kept and it may be divided into categories, according to the type of contract for which the qualification is valid. |
| 31990L0531 - Utilities (1st generation) | Article 24.7 |
| 7. A written record of qualified suppliers or contractors shall be kept, and it may be divided into categories according to the type of contract for which the qualification is valid. |
