Art. 123, 17, 19 SchKG; postponement of enforcement and scope of federal review. The grant or refusal of postponement under Art. 123 SchKG is primarily an issue of appropriateness and factual assessment within the competence of the cantonal supervisory authority. The federal supervisory instance does not re-examine such discretion; it intervenes only where the cantonal decision rests on grounds irreconcilable with the purpose and system of the Act, or where a violation of law or denial/delay of justice is shown (consid. 1). The nature of the enforced claim may lawfully be taken into account when assessing whether postponement is justified.