This paper does not seek to address the nuances of divestiture in relation to certain transactions, but seeks to present a theoretical cross-sectional platform, consisting of the two main legal systems (common law and civil law) and other instruments for harmonizing regional and international private law that enshrine these transactions. Part 1.2 deals with the concept of attribution. Part 2 distinguishes between divestment and other related concepts such as delegation, innovation and contract for the benefit of a third party. The third part examines the validity of the assignment by examining the requirement for an effective assignment, such as agreement and notification. Part 4 assesses corrective actions and the protection of the debtor and agent. Part 5 closes. Unless the contractual agreement is otherwise provided, the assignee is generally not assigned more rights than the assignee and the assignee may remain responsible for the performance of the contract vis-à-vis the original consideration. The speedmaker often delegates tasks in addition to the rights to the agent, but the assignee can ultimately remain responsible. Under English law, in addition to the obligation to bind the debtor, the court imposed a time limit, provided for a stricter definition of what a disclosure is, requiring that the application be clearly and unambiguously recorded on the fact of the transfer and that payment be made to the assignee. It should be noted that this principle is of particular importance in the area of fair assignment, since a legal assignment can only exist if the obligation to terminate is fulfilled or has been fulfilled.
 In the case of James Talcott Ltd v. John Lewis – co. Ltd. and North America Dress Co.Ltd the Court of Appeal of England when the case was dismissed, found that a debtor who receives what is supposed to be a notification of assignment, but does not specify that the right to fault has been transferred to the assignee, but that he can pay that part, cannot be paid a second time if he pays the assignee. This provision shows that written notification is an essential element of the legal transfer of ownership to the debtor and is inoperative unless strictly correct; z.B with respect to the date of the transfer and the amount owed by the debtor.  In the event of a fair assignment, disclosure is not necessary for its perfection.  This is due to the fact that, even without notification to the debtor, the title of the assignee is complete, not only against the assignee himself, but also against the person in the same position as the assignee. B, for example its liquidator, a judge or a person who, in the course of a subsequent assignment, asserts rights without consideration.  However, Greg Tolhurst has identified four goals that termination can accomplish in the transfer of contractual rights.