The requirement of free consent is in Section 10 of the Indian Contract Act and must be satisfied to transform an agreement into a contract
Section 13 of the Indian Contract Act defines Free Consent. It states that two or more persons are said to consent when they agree upon the same thing in the same sense.
Consent is said to be so caused when it would not have been given but for the existence of such coercion, undue influence, fraud, misrepresentation or mistake.
Section 15 of the ICA states that “Coercion” is the committing, or threatening to commit, any act forbidden by the Indian Penal Code, or the unlawful detaining, or threatening to detain, any property, to the prejudice of any person whatever, with the intention of causing any person to enter into an agreement. (KISHEN LAL KALRA Vs NDMC)
If the consent of a party to any transaction is not a free consent, such consent will be revocable at the option of the party whose consent was obtained by coercion (DAIICHI KARKARIA Vs ONGC)
Also to keep in mind that, it is immaterial whether the Indian Penal Code is or is not in force in the place where the coercion is employed.
Hope this solves your query.