The court discusses the conditions under which a party may be estopped from raising a ground for refusal of enforcement under the Convention or has waived the right to raise it.
Estoppel/waiver
512
Ground c: Excess by arbitrator of his authority - Excess of authority
513
Ground d: Irregularity in the composition of the arbitral tribunal or arbitral procedure
518
Public policy: The court discusses the meaning of (international as compared to domestic) public policy, generally defined as the basic notions of morality and justice of the enforcement State.
Paragraph 2 - Distinction domestic-international public policy
522
Public policy: The court discusses the consequences of the lack of reasons in the award on its recognition and enforcement.