A legal contract is an enforceable agreement between two or more parties. It can be verbal or written. Although the European Union is in fact an economic community with a number of trade rules, there is no overall “Community contract law”.” In 1993, Harvey McGregor, a British lawyer and academic, developed a “contract code” under the auspices of the English and Scottish Law Commissions, which was a proposal to encrypt and codify the contractual laws of England and Scotland. This document has been proposed as a `treaty code for Europe`, but tensions between English and German lawyers have led to the failure of this proposal so far.  An error is a misunderstanding of one or more contracting parties and can be used 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. The common law doctrine of treaty practice provides that only contracting parties can be sued or prosecuted.   The main case of Tweddle v Atkinson   immediately demonstrated that the doctrine stood firm for the parties. In the law of the sea, the cases of Scruttons v Midland Silicones   and N.Z. Shipping v Satterthwaite   determined how third parties could obtain protection of the restriction clauses in the same bill of lading. Some common law exceptions, such as agency, assignment and negligence, have circumvented some of Privity`s rules, but the unpopular doctrine  remained intact until it was amended by the 1999 Third Party Rights Act, which provides: An oral contract may also be characterized as a parol contract or an oral contract.
, the term “verbal” meaning “verbal” speaking and not “in words.” , a well-established use in British English in terms of contracts and agreements, and often, although slightly obsolete as “loose” in American English.  Within the United States, the choice of statutory clauses is generally applicable, although exceptions may sometimes apply on the basis of public policy.  Within the European Union, even if the parties have negotiated a legal choice clause, legal disputes can be resolved by the Rome I Regulation.  Contractual terms are classified differently depending on the context or jurisdiction.