So, what is:

Probity:Evidence of ethical behaviour, integrity, uprightness, honesty; including transparency and accountability. Contemporaneously it requires an understanding and application of probity associated risks.
Integrity:Nothing wanting, unbroken completeness, soundness; strong ethical principles.
Ethics:Encompasses the concepts of honesty, integrity, diligence, fairness, good faith, trust, and respect.
Procurement:The processes of acquisition of goods and services, including: planning, purchasing, evaluation, contracting, disposal, and related cost benefit. It includes acquisitions via grants, leases and sponsorships.