How deep should the first level controller of the lead partner check the partner reports?
The first level controller should rely on the first level control of the project partners. He should base his work on the check of the other first level controllers. The work should not be done twice. But the lead partner’s first level controller should satisfy himself that the check has been done by a designated first level controller (e.g. designation certificate, first level control confirmation, checklist, sample documents, etc.).