Typical reasons for the nullity of a contract are coercion, inappropriate influence, misrepresentation or fraud. A contract entered into by a minor is often cancelled, but a minor can only circumvent a contract during his minority status and for a reasonable period of time after reaching the age of majority. After a reasonable period of time, the treaty is considered ratified and cannot be avoided.  Other examples would be real estate contracts, lawyers` contracts, etc. If a contract is entered into without the free consent of the party, it is considered a cancelled contract. The definition of the law states that a non-contractual contract is legally applicable to the choice of one or more parties, but not to the choice of the other parties. A cancelled contract may be considered valid if it is not terminated by the aggrieved party within a reasonable period of time. An agreement reached by a minor; Agreements without consideration (excluding „article 25, p. 42) certain agreements contrary to public policy; Etc. [A list of such agreements“ is stated in Chapter 8, these agreements are nullified by `initio, i.e. cancelled from the outset A person who claims that a contract is void must prove that the contract is tainted by fraud, inappropriate influence, misrepresentation or other circumstances that would allow a party to attempt to avoid it.
 It may also occur that the party entered into the contract as valid. As soon as this happens, this part is prevented from refusing validity at a later date.  With a void contract, he is disabled from the start. There is no need for a party to hold back or question its validity. In this case, neither party is in a position to impose a zero contract, as it is considered to have never existed. In the case of a contract punishable by compensatory measures, it becomes invalid only when a party invokes a legal ground for dismissal or revocation. This means that the contract would remain valid without any party raising legal objections. A contract is not entered into if one of the parties did not initially approve the contract, if it knew the true nature of all the elements of the contract prior to the initial adoption.