The exchange or barter is a system of exchanges, which has been practiced since ancient times. This, by means of the participation of two people, allows the delivery of the rights over an object of value, for, in exchange, to receive the domain over one of equal or similar value; In the event that there is no balance between the cost of the goods, a sum of money that matches them would be delivered. This practice, with the implementation of the sales system, has fallen into disuse; however, it is used as a legal method for currency exchange in countries with aggressive exchange controls.
Barter was born as one of the first forms of commerce. Each one of the towns that settled, used to distinguish themselves from the others by the products they managed to commercialize; even so, there was a need for other items that were not within his production repertoire. With the arrival of the swap, small towns could access items that could not be extracted from their lands. Over time there were certain failures in the mechanism, in addition, the invention of the currency marked the end of the exchanges, since it offered a much more equitable system, according only to the needs of the buyer and with greater confidence in both parties.
The swap contract has certain characteristics, such as: bilaterality, that is, at least two parties must be involved in the process; onerous, both parties must have financial obligations; it is consensual, those involved must express their will about the change; and it is transferring ownership, is given the power to one of the individuals on a valuable item.
