'Frustration of purpose' as an excuse for nonperformance applies when:

Giải thích

Frustration of purpose excuses performance when, after formation, an unforeseen event destroys the principal purpose that both parties understood as the basis of the contract, even though performance is still physically possible. Because the reason for contracting has evaporated, requiring performance would be pointless. Mild annoyance, a modest cost increase, or a contractor's own oversight, like forgetting to order materials, does not rise to frustration of the contract's essential purpose.