Due to the force majeure causes any party is unable to perform a contract due to force majeure, should be in 3 days after the event notification, try to reduce the loss.

任何一方由于不可抗力原因不能履行合同时，应在不可抗力事件发生后3日内通知对方，尽力减少损失。

youdao

This may be a subject for contract terms and conditions with professional services firms who perform these services.

FORBES: Mind On The Money: The Dodd-Frank Whistleblower Provisions

Those are the facts necessary to satisfy the elements of a claim for, say, breach of contract: promise, consideration, failure to perform, causation and damages, or the requirements of an affirmative defense: impossibility of performance, for instance.

FORBES: Relevance and Strategy