Контекст: (прекращение членства авиакомпании в клиринговой палате (КП) и обязательства по выплате средств после прекращения членства):

Net creditor: With respect to the member, whose membership has terminated, the Manager (of the КП) shall withhold ...% of the net funds due to the terminated member in any settlement taking place within ... months following the date the termination takes effect, in which the terminated meber is a net creditor.

Net debtor: КП shall hold funds for the purpose of being apllied and disbursed in subsequent settlement in which terminted member is a net debtor.

Грубо говоря, по результатам расчетов (взаимозачетов) чистый кредитор - тот, которому должны, а он никому не должен; чистый дебитор - наоборот.