pliers’ “integrity requirements” with the aim of consolidating the existing control system through more rigorous action to tackle corruption, particularly by: setting out specific documentary check criteria for legal and integrity requi rements that are homogeneous and applicable to the procurement process (from the assessment phase through to awarding individual contracts); identifying the operating modes for checks to enhance the preventive tools available and have a rational, organic and determined impact on any cases of corruption or on factors contributing to its spread; promoting a widespread culture of compliance and ethics.