a) Three price quotations not in all instances invited. b) Awards to certain suppliers who failed to provide a valid tax clearance certificate. c) The preference point system as required by the Preferred Procurement Policy Framework was not in all instances applied. d) Awards to certain suppliers did not score the highest points in terms of the preference points system. e) Contracts amendments or extensions resulted in circumvention of competitive bidding. f) Ineffective internal audit evaluation of SCM compliance.