What are the conditions for the validity of consent in a contract?  
The conditions for the validity of consent in a contract are that the disposition should have been capable of being consented to at the time it was made and at the time the consent is given. Additionally, it is necessary that the person who had the right to give consent, the two parties to the contract, the subject matter of the contract, or a substitute for the specified thing, if applicable, must exist at the time the consent is given.