An error is a misunderstanding of one or more contractors and can be cited as a reason for cancelling the agreement. The common law has identified three types of errors in the Treaty: frequent errors, reciprocal errors and unilateral errors. If there is a dispute as to whether a contract has been entered into or not, it is for the party who asserts that there was no intention to create a legal relationship to prove it: that is, they bear the burden of proof. And they have to prove it on the scale of probabilities. Contractual guarantees are less important conditions and are not fundamental to the agreement. They cannot terminate a contract if the guarantees are not fulfilled, but they can claim damages for the losses incurred. (a) the terms of acceptance significantly change the original contract; or (b) the supplier`s goods within a reasonable time. If the promise of the contract is not kept, the victim can file an appeal. It could be otherwise if the parties agree to enter into some form of contract – which contains the approval of all the specific conditions necessary to conclude a contract in the future. In order for a contract to be concluded, the parties must be subject to mutual consent (also known as the Assembly of Spirits). This result is usually achieved by the offer and acceptance that does not change the terms of the offer, which is known as the “reflection rule.” An offer is a definitive statement about the supplier`s willingness to be bound if certain conditions are met.
 If an alleged acceptance alters the terms of an offer, it is not an acceptance, but a counter-offer and, therefore, a rejection of the original offer. The single trade code has the rule of item 2-207, although the UCC only regulates goods transactions in the United States. Since a court cannot read the minds, the intention of the parties is objectively interpreted from the point of view of a reasonable person, as found in the first English case Smith v. Hughes . It is important to note that if an offer indicates a particular type of acceptance, only an acceptance communicated by that method is valid.  In India, electronic contracts are governed by the Indian Contracts Act (1872), which requires certain conditions to be met when making a valid contact. Some sections of the Information Technology Act (2000) also provide for the validity of online contracts.  Sometimes the ability of individuals or artificial persons to enforce contracts or to enforce contracts is limited. For example, very young children should not be seen as good deals they have done assuming they do not have the maturity to understand what they are doing; Employees or managers may be prevented from entering into contracts for their company because they have acted in an ultra vires manner (beyond their power).
Another example could be people who are unable to act mentally, either because of a disability or through drunk driving.  But it can be difficult to do so, especially if it is an oral contract.