Although a contract is not invalid when it is created, it is possible that other factors invalidate it. New laws may come into force, resulting in the immediate invalidity of a contract. Information that was previously unknown to the parties to the contract may also invalidate the contract. Since all contracts are unique, it is often difficult to assess their validity. An example of an invalid agreement due to uncertainty is the one that is vaguely worded: “X agrees to buy fruit from Y.” If there is no way to determine what type of fruit has been agreed or planned, the agreement is void. However, if Party Y in the above agreement is a grapefruit producer, there is a clear indication of the type of fruit expected and X would still be obliged to make the purchase. 4. Determine if a new contract can be drafted or if the contract should be abandoned altogether. Similarly, any agreement that limits the period within which claims may be filed with the court in order to shorten the time limit is considered to be the agreement prescribed by the Limitation Act 1963. c) The promise was to do something personally, and the promisor dies or is bothered by illness or accident. Such cases are usually seen in the practical world.
The contract must only be concluded by the Promisor and not by his representative or a third party, since the execution of the contract is based on personal skills or qualities. In such cases, the contract is declared null and void if the celebrity falls ill or is disabled or even dies. 5. Legal proceedings may be initiated to assess the situation and determine whether the contract is void or not. The only caveat in this regard is that the agreement should be appropriate depending on the nature of the transaction. The purpose of this exception is to protect the interests of a customer buyer. If this provision is not provided, it may happen that after the sale of his goodwill, the seller creates another store and this actually attracts all the customers of the goodwill buyer.  b) Are such acts not known to the parties:- There may be cases where the parties to the contract know nothing of the reality at the time of the conclusion of the contract, but learn after a certain time that it is impossible to perform such an act. Soon, the parties learn of the impossibility of performance, the contract becomes null and void.
Such agreements fall within the scope of the provisions of Article 20 relating to errors. In most cases, these agreements relate to the non-existence of the subject matter of the contract at the time of conclusion of the contract. Therefore, the agreement is affected by an error as to the existence of the subject matter of the contract. .